* Initialize OpenshiftGroupsSync attributes early
The fail_json() method calls close_connection(), but this can fail when
the python-ldap library is not installed as close_connection() gets
called before the __ldap_connection attribute has been defined.
* Use already defined virtualenv_command
* Fix tests
* Add changelog fragment
- delay the loading of external modules when possible
- delay the loading of OKDRawModule and OpenShiftProcess classes
- k8s reuse the design of the kubernetes.core modules
We've got a chicken/egg problem that prevent us from properly
reporting if kubernetes.core is missing. We need args_common to create
the module object. And we need the module object to report the missing
dependency. The dependency is declared in the galaxy.yml file anyway,
the problem should not happen.
