Add Quota middlewares support

Two middlewares exist for managing quotas:
- account_quotas
- container_quotas

Change-Id: Ic6d539db480d8749769279b44e1f38302ac0fa62
Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>
(cherry picked from commit 4157cb9a4141c071337f7e7c1946f32dd0342945)
Fix auth_token configuration.

- cache=swift.cache need to be in auth_token configuration not in
  keystoneauth.
- Make auth_token using the same facility for logging than main swift.

Closes-Bug: #1254487

Change-Id: If5a09da4d18f247dc42b99e6f666bc2867d06dcb
(cherry picked from commit 000d63b65417b9cf73763e1d25eef1a8f3b695a7)
Merge "Add Quota middlewares support" into stable/havana
Merge "Fix auth_token configuration." into stable/havana