new: Added FreeBSD support to ConfigDrive
new: Added FreeBSD template for manage_etc_hosts support
fix: Updated some syntax to be pep8 compliant
Removed using lazy mode for umount

Safer for cloud-init to not use lazy mode for unmount
merge from trunk
support 'mtype' as a list, and fix up freebsd mount types

this supports a list of input, and cleans up that list
for the platform specific mount types.  Basically,
 mtype = None
 means 'mount -t auto' or the equivalent for the platform.

and 'iso9660' means "iso type".
fix re-use of 'platform' in local scope
further platform cleanup
tools/build-on-freebsd: sort pkgs list
tools/build-on-freebsd: add blkid and e2fsprogrs
tools/build-on-freebsd: e2fsprogs provides blkid
sysvinit/freebsd: set sane PATH
add ConfigDrive for freebsd config by default
FreeBSD: Support ConfigDrive

Add support for freebsd reading config drive.  Primary work is
related to re-factoring mount_cb to not be so linux specific.

Other changes:
 * declare PATH in freebsd initscripts
 * list dependency on e2fsprogs (for blkid)
 * enable ConfigDrive in freebsd config
 * hosts.freebsd.tmpl added