Keystone fernet key rotation without gluster

In order to get rid of keystone fernet key directory being
managed by a shared filesystem, this patch contains salt orchestrate states
to create needed directories, generate ssh keys and put public keys
to respective nodes PRIOR to keystone installation. Rsync script
is used to copy fernet keys from primary control node to all the rest of
control nodes.

Change-Id: I6a11870a59301902cf1bc12624c1fd86d8e816b8
Related-PROD: PROD-19972
9 files changed