Update to the latest loopingcall from oslo.

This needs threadgroup as well, as it uses loopingcall.

Change-Id: Idfa68519c9e263830c9e6a16c2e1bfbd8c89069d
heat templates : Update Wordpress config for F18 guests

F18 contains apache 2.4 which requires a different syntax to enable
non-local access to the wordpress install

fixes bug #1166897

Change-Id: Ia63cceeba35904f05a1b4cf76fc075d3cdc7cd86
Merge "Update to the latest loopingcall from oslo."