This commit adds/changes the following for SmartOS guests:
- modifies the "Halt" capability to use /usr/sbin/poweroff in preference
to /usr/sbin/shutdown with parameters, and modifies the associated
test.
- adds an "InsertPublicKey" capability and tests.
- adds a "RemovePublicKey" capability and tests.
With this commit applied, the vast majority of typical Vagrant workflow
is available to SmartOS global zone guests (provided NFS mounts are used
rather than VMWare shared folders).
Run remote rsync as root to guarantee that rsync can write to guestpath.
This obviates the need to chown the guestpath to the SSH user prior to
sync.
This brings a substantial speedup (2x on a moderately-sized shared
folder) and properly triggers filesystem notifications on only the files
changed by a given sync.
rsync should *always* be pre-installed in SmartOS (global and local zones), as
it's part of the kernel. Previous commits incorrectly attributed #rsync_install
to running rsync, rather than to installing the rsync command.
