Add print task.

Made a task that simply prints the output that is given to it as
an argument. Can be used like any other task (under sequential,
etc...)

IE:

tasks:
- print: "String"
- chef: null
- print: "Another String"

Signed-off-by: Sandon Van Ness <sandon@inktank.com>
Signed-off-by: Yuri Weinstein <yuri.weinstein@inktank.com>
lock.py: allow --brief to stand on its own (without --list)

I use --brief all the time, and it's annoying to have to type
the useless --list at the same time.

Signed-off-by: Dan Mick <dan.mick@inktank.com>
Merge pull request #221 from ceph/wip-brief

lock.py: allow --brief to stand on its own (without --list)
Merge pull request #220 from ceph/wip-print

Add print task.
Handle newer btrfstools.

Newer btfs userland tools needs a -f like xfs instead of a prompt
for yes. Trusty needs this change.

Signed-off-by: Sandon Van Ness <sandon@inktank.com>
Merge pull request #222 from ceph/wip-trusty

Handle newer btrfstools.
lock: allow -a with --brief

Signed-off-by: Sage Weil <sage@inktank.com>
Merge remote-tracking branch 'gh/firefly'