Enable logging and fix syntax errors

Currently, this script errors out with a syntax error since "mount_nfs()" is syntax for creating a function, not invoking one. The same problem exists with "unmount_nfs()". Also, the "start)" case wasn't terminated.

Additionally, this job should log its output like the other jobs in CF so I added the inclusion of comm/utils.sh which enables this.
Fix the reference to nfs_server.share_path

You forgot the = after <%. I also updated the property reference to use modern BOSH syntax.
Merge remote-tracking branch 'origin/pr/559' into develop
Merge remote-tracking branch 'origin/pr/558' into develop