Add missing configuration options and fix ansible lint errors

[Lun4m]

Fixes:

• Add deploy role → moved to Add ansible files for deployment #33
• Add security group for Obsinn during configuration
• Add table partitions during configuration
• Fix postgres data directory (closes Make Postgres use the correct partition for data storage #36)
• Always point to primary in LARD_CONN_STRING
• Make style conform to ansible-lint
• Figure out how to deal with changed_when and ignore_errors
• Add automatic teardown and add a way to handle ssh on teardown
• Check if lard service should be stopped/restarted during switchover
• Understand why lard_ingestion can't connect to postgres on the standby node

Double check roles:

• addsshkeys → moved to ssh
• bigip
• deploy
• movefloatingip → moved to ostack
• networks → moved to ostack
• primarystandbysetup → moved to ostack
• rejoin
• ssh
• switchover
• vm → moved to ostack
• vm_format → moved to ostack

Double check playbooks:

• bigip
• configure
• deploy
• migrate
• provision
• rejoin
• switchover