meta: split into v1/v2 sub-schemas (#384)

- add a version field that can be wither 1 for old standalone roles
  or 2 for newer collection based roles.
- author is now free form
- galaxy_info.namespace is not allowed under v2
- galaxy_info.role_name is not allowed under v2
- galaxy_info.galaxy_tags is not allowed under v2
- we no longer allow the meta/main.yml to be empty
- galaxy_info.description is required under both v1 and v2
- galaxy_info.license is optinal under v2
- galaxy_info.min_ansible_version is not allowed under v2
- added cloud_platforms for v1

.config/dictionary.txt

@@ -61,6 +61,7 @@ netconf
 nocows
 nosetests
 nthash
+ovirt
 parseable
 pbrun
 pfexec