GOBMCN2-55 - ssh setup role
GOBMCN2-55 - ssh setup role

roles/ssh-setup/tasks/main.yml
-- add role for setup of ssh keys
-- copy key to authorized_keys
-- copy key to known_hosts

Change-Id: I750764cdb52161740ebe46953932fa5490d28f47

google/bms-toolkit,google/bms-toolkit