swift rsyncd config max connections is not standard/recommended

Change-Id: I9137bdff3e57fa50cc8856bd9ec3455135035e01
Closes-Bug: #1387276
Move to keystone.token.persistence.backends.sql.Token

We had been used a proxy class which has now been removed.

Closes-Bug: #1387584
Change-Id: Idef873ac0593438b1b29417332f51b0b4ddded49
Merge "swift rsyncd config max connections is not standard/recommended"