Implement Swift storage backend for Glance

Change-Id: I3ed654c669a47c28450f40d1ce369769a7221e52
Reverts InnoDB performance setting

Implementation is not stable and causes problems on some setups. We will have
to find another way to setup InnoDB performance options.

This reverts commit 48a0d4bcbed7d51de8b85506257783f4b49476fe.
This reverts commit 8150f6a0b805ac9e032a48f3e207f0644e1af8b1.
This reverts commit 7b2f1f7acb79fcdb16e0fa5e4712e53cdb2dfaec.
This reverts commit 2877033d2155b58fac9bc2e3c2e566bc092a2584.
This reverts commit fa002b8e368b9e65d1aa5d81f4779f74571f86b0.

Change-Id: I2ad10a80413793796f09b411f59e54e3a01c2a61
Fixes the duplicate creation of service/endpoint for cinder v2.

Change-Id: Ice1166b3af5685b8dcbc83dcb0b021a7530aa4cd
Fixes: rhbz#1153354
Signed-off-by: Gael Chamoulaud <gchamoul@redhat.com>
Configure chronyd for RHEL 7/CentOS 7/Fedora

The default NTP client for Fedora and RHEL 7 is chrony, instead of
ntpd. Configuring ntpd for systems where chrony is installed leads
to some issues, so the proposed patch will properly configure
chrony on RHEL 7, CentOS 7 and Fedora, while keeping ntpd for
earlier releases.

Change-Id: Ifd59f67909094327cbed280767292a45b542da2a
Merge "Implement Swift storage backend for Glance"
Merge "Configure chronyd for RHEL 7/CentOS 7/Fedora"
Merge "Fixes the duplicate creation of service/endpoint for cinder v2."
Add prompts for sahara.
Some configuration, hopefully.
Hopefuly a plugin.