Single .rubocop.yml file for all Ruby files, attributes cleanup.

Also changed email & company name.

Addresses: blueprint rubocop-for-ops-messaging
Change-Id: I1bb991184f813bc574e1c6a4f5de3030b82c0b49
Remove Berksfile.lock from dev branches

blueprint remove-berksfile-lock-from-dev-branches

Change-Id: I730a7b8876a9610236f8afc5ef544abf2972dea2