MFC r284660, r284676:

MFC r284660, r284676:

 r284660:
  Remove the Azure-local vm_extra_create_disk(), since we no longer
  need qemu-img to convert the final VHD image to an Azure-compatible
  format.

  Although the waagent utility is installed from ports, create the
  symlink to /usr/sbin, pending investigation on where this is
  hard-coded, so it can be reported upstream.

 r284676:
  Append the hour and minute to the snapshot suffix for EC2
  AMIs and Azure VM images.  This is particularly helpful for
  testing to avoid name collisions, but also useful for cases
  where a necessary rebuild is done before the date changes.

Sponsored by:	The FreeBSD Foundation

git-svn-id: svn://svn.freebsd.org/base/stable/10@284774 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f