fixes #5812 - url parameter in compute_resource#create is not required for EC2, removing the required flag

Fixes #6884 - Installation media without $minor generate broken $version

$version is generated with the major version and a dot, producing paths
like foo.bar/x64/7. which don't exist. For CentOS at least we want to generate
a path without the dot. The default values for these media have been changed too.

Fixes #9113 - api docs for users miss locale and timestamp params

Locale was missing also in the server responses.

Fixes #9160 - use provision interface for image based provisioning

fixes #9030 - Adds support to clone config template via api

Fixes #9225 - private is defined twice in hosts controller

Refs #3809 - Enable cop StringConversionInInterpolation

Fixes #8052 - allows erb in array and hash params

fixes #8469 - css cleanup, whitespaces and remove dead code

Fixes #7456 - Extract primary interface from host

• Tomas Strachota (tstrachota) <tstrachota@redhat.com>
• Marek Hulán (ares) <mhulan@redhat.com>
• Gregory Sutcliffe (GregSutcliffe) <gsutclif@redhat.com>

All host must have at least one primary interface and one provision (can...