Fix 'docker ps --help' so the options don't span more than one line and add a testcase to catch this in the future.
Fix 'docker ps --help' so the options don't span more than one line
and add a testcase to catch this in the future.

While in there I also:
- removed extra periods from the few options that had them (new test)
- made the --filter option consistent across all command

Signed-off-by: Doug Davis <ff3bde741799c0eff815b83a54eda3fc494df54f@us.ibm.com>

dnephin/cli,ashfall/cli,allencloud/cli,docker/cli,riyazdf/cli,thaJeztah/cli,riyazdf/cli,docker/cli,ashfall/cli,Zebrilee/cli,Zebrilee/cli,thaJeztah/cli,e11137/cli,cpuguy83/cli,e11137/cli,allencloud/cli,cpuguy83/cli,dnephin/cli,redpanda/cli,redpanda/cli