adding a few tweaks and fixes/workarounds

adding a few tweaks and fixes/workarounds

- looks like the ssh url for gerrit is not working from the releng VMs
  so trying with https now

- the CommandFailed class was broken and it appears to be that there
  was a missing docstring for that class, so self.__doc__ was None
  and doing a return with something None + something else was crashing.
  So, I added a basic docstring there. I know this is code similar to
  another project (e.g. git-review), so I'm not so confident it's
  the right thing, but its working for me. It was noticed because the
  ssh url to gerrit was being rejected so that class was getting
  excercised

- I did a few modifications based on what my IDE told me was good
  python

- I removed one and added one print output to make it more clear
  what's going on (to me, at least)

- fixed one variable naming typo

- defining the ssh URL in a single location

- verbose cmdline arg was overriding VERBOSE to 0 even if it was modified inline

Change-Id: I623e67ffb71660b3d9c5a55b0b31bc93dab4df55
Signed-off-by: Jamo Luhrsen <jluhrsen@redhat.com>