MFC r277458, r277536, r277606, r277609, r277836, r277839,

MFC r277458, r277536, r277606, r277609, r277836, r277839,
r278118, r278119, r278206, r278502:

 r277458:
  Move virtual machine / cloud provider targets and
  options from release/Makefile to their own Makefile.

  Add glue to allow enabling building cloud provider VM images
  by default.

  Add a 'vm-cloudware' target, used to drive all targets in
  CLOUDTARGETS.

  Add examples for WITH_CLOUDWARE to release.conf.sample.
  Add WITH_CLOUDWARE evaluation to RELEASE_RMAKEFLAGS.

  Rewrite to consolidate VM image build scripts into one.

  Fix duplicated mkimg(1) call in vm_create_disk().

  Add primitive (untested) PowerPC/PowerPC64 VM image support.

  Note: As it is currently written, the /boot/pmbr and
  /boot/{gptboot,boot1.hfs} use the build host and not the
  target build.  Fixing this is likely going to be a hack in
  itself.

  mount(8) and umount(8) devfs(5) as needed.

  Change path for mk-vmimage.sh from ${TARGET}/ to scripts/ now that
  it is consolidated into one file.

  Fix paths for the base image and output disk image files.

  Set the boot partition type to 'apple-boot' for powerpc.

  In vm_install_base(), copy the host resolv.conf into the build
  chroot before attempting to do anything that requires working DNS
  (i.e., pkg bootstrap).

  In vm_extra_pre_umount(), remove the resolv.conf before the disk
  image is unmounted from the backing md(4).

  Silence errors when umounting the chroot's /dev, since it probably
  doesn't exist when we're running this.

  Unmount filesystems before attempting to destroy the md which
  holds them.

  Unmount filesystem and destroy md before we read the vnode from
  disk and package it into a disk image.  Otherwise we end up
  packaging an unclean filesystem.

  Merge duplicative vm-CLOUDTYPE targets before additional duplication
  gets added by the impending arrival of ec2 and gcloud.

  Add NOSWAP option which can be set by a vmimage.conf file to specify
  that no swap space should be created in the image.  This will be used
  by EC2 builds, since FreeBSD/EC2 allocates swap space on "ephemeral"
  disks which are physically attached to the Xen host node.

  In vm_extra_install_packages(), only bootstrap pkg(8) if
  VM_EXTRA_PACKAGES is empty.

  In vm_extra_pre_umount(), cleanup downloaded packages if pkg(8) was
  bootstrapped earlier.

  In vm_extra_install_base(), do not install waagent in the openstack
  image, because it is not used.  This appears to be a copy mistake.

  Remove vm_extra_install_base() from the openstack.conf entirely,
  since it does not need to be overridden.

  Enable password-less sudo for openstack images.

  Update the VM_EXTRA_PACKAGES list for the openstack images.

  Remove vm_extra_install_base() for the Azure image, now that the
  waagent exists in the ports tree.

  Add sysutils/azure-agent to the VM_EXTRA_PACKAGES list.

  In vm_extra_pre_umount(), remove the explicit pkg(8) install
  list, as dependencies are resolved by sysutils/azure-agent.

  Add a 'list-cloudware' target to print the list of supported CLOUDWARE
  values and a description.

  Add the AZURE_DESC and OPENSTACK_DESC descriptions.

  Update release(7)

  Add 'list-vmtargets' target, which produces a list of all supported
  VM and cloud provider images.

  Add VHD_DESC, VMDK_DESC, QCOW2_DESC, RAW_DESC image descriptions.

  Update release(7) to document the list-vmtargets target.

  Add initial support for the GCE (Google Compute Engine) cloud hosting
  provider image.

  Remove the console setting from rc.conf(5), which is not used there.
  While here, set console to include vidconsole in the loader.conf(5).

  Remove the pkg-clean(8) call from vm_extra_pre_umount() since the
  function is often overridden.

  Add vm_extra_pkg_rmcache() to call pkg-clean(8) to avoid duplicated
  code.

  Move resolv.conf(5) removal back to vm_extra_pre_umount() where it
  belongs.

  The GCE image needs resolv.conf(5) to exist (created as part of the
  image setup), so it cannot be removed.

  Comment the line that configures ttys(5) to 'off', which makes it
  impossible to test that the image boots.

  Add a note explaining why the line is commented, and not (yet) removed
  entirely.

  Move the 'install' bits that are specific to virtual machine images
  from the Makefile to Makefile.vm.

  Rename the 'install' target to 'release-install', and add a new
  'vm-install' target.

  Add a new 'install' target that invokes the new targets.

  Add WITH_CLOUDWARE to the list of make(1) variables for the release
  build.

  Remove hw.vga.textmode=1 from the VM image loader.conf, which was
  included during test builds and not intended to be included when
  merging this project branch back to head.

  Remove mk-azure.sh, which is no longer needed.

 r277536:
  Rename the 'release' target to 'real-release', and add two targets,
  'vm-release' and 'cloudware-release', that are invoked if
  WITH_VMIMAGES and WITH_CLOUDWARE are not empty.

  This fixes an issue where 'make release' would not build the cloud
  provider targets because CLOUDWARE was not yet set.

  Move the WITH_VMIMAGES and WITH_CLOUDWARE targets to Makefile.vm.

  Note: There is no 'cloudware-install' target yet, since some of the
  disk image names may need to be specific to the provider, so this is
  probably best handled by the build scripts.

 r277606:
  Provide a recipe of "true" for building the "release" target once
  its prerequisites are satisfied, in order to avoid having an implicit
  rule triggered by the presence of release.sh.

 r277609:
  When iterating through VMFORMATS, the VMBASE file is not removed
  or truncated to a zero-size file, which if used to create more
  than one disk image format, can result in accidental pollution of
  the target formatted disk image.

  Instead of using a single VMBASE image (vm.img, by default), use
  a single base file for each format, named as VMFORMAT.img, which
  produces VMBASE.VMFORMAT as the final formatted image.

 r277836:
  Rename the 'system' target to 'disc1', which is specific to the
  disc1.iso installer image.

  Replace 'system' with 'release' in CLEANFILES, and add 'disc1'
  to CLEANDIRS.

  Ensure the 'dvd' target depends on 'packagesystem'.

  Fix 'mini-memstick.img' prerequisite, which should be the 'bootonly'
  target, not 'disc1' (previously 'system').

  Use .TARGET as the target installation directory for the disc1.iso
  and bootonly.iso images, which now expand to 'disc1' and 'bootonly'
  respectively, mimicking the behavior of the 'dvd' target.

  Remove '@true' from the 'release' target, and instead use
  'touch ${.TARGET}' to prevent multiple iterations of
  'make release' from clobbering previously-built installer
  medium.

 r277839:
  Update release(7) to reflect renaming the 'system' target to 'disc1'.

 r278118:
  Move service_enable="YES" rc.conf(5) additions to VM_RC_LIST and
  deduplicate.

  Evaluate if firstboot_freebsd_update should be enabled based on
  UNAME_r, because it is not supported for the -CURRENT or -STABLE
  branches.

 r278119:
  Use ifconfig_DEFAULT="" instead of hard-coding vtnet(4)

 r278206:
  Bump copyright after r277458.

 r278502:
  In scripts/mk-vmimage.sh, prevent incorrect usage() by defaulting
  VMCONFIG to /dev/null, and additionally ensuring VMCONFIG is not
  a character device before it is sourced.

  While here, be sure to exit if usage() is called.

  This should effectively be no-op, but the usage() output was
  discovered while investigating a larger issue.

* Several changes local to stable/10 were needed in order to handle
  UEFI images that are specific to this branch.

Tested with:	stable/10@r278906
Sponsored by:	The FreeBSD Foundation

git-svn-id: svn://svn.freebsd.org/base/stable/10@278985 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f