Update nova conf files for Juno

* Update api-paste
     new v3 and request id
* update nova.conf
     new name for quota_injected_file_path_bytes
* Update spec as needed

Change-Id: Ie6e50d2553c1f041502faa9d61ca255d6830e486
Closes-Bug: #1352984
Merge "Update nova conf files for Juno"