Add "." for help strings

The command descriptions did not include a "." at the end but the
argument description does. Add "." everywhere.

Also capitalize and add "." for parameter of capabilities.

Change-Id: I2355e0d0c38170d669c8e568361faf4b68203d16
Fix running the unittests under py3

Since we added the tests.functional the py3 tests wasn't running
properly fixing it with some voodoo testr magic.

Change-Id: Id301adb32ba739f05591c4c352e0cf7d87576755
Merge "Add "." for help strings"