Allow for no role_versions to be present (#56519)

* Allow for no role_versions to be present

  fixes #46650

  better info on fetch, ensure list return

* use correct to_

changelogs/fragments/dont_assume_role_versions.yml

@@ -0,0 +1,2 @@
+bugfixes:
+    - new code assumed role_versions always were present event though rest of code does not.

lib/ansible/galaxy/api.py

@@ -200,6 +200,7 @@ class GalaxyAPI(object):
         The url comes from the 'related' field of the role.
         """
 
+        results = []
         try:
             url = '%s/roles/%s/%s/?page_size=50' % (self.baseurl, role_id, related)
             data = self.__call_galaxy(url)
@@ -210,9 +211,9 @@ class GalaxyAPI(object):
                 data = self.__call_galaxy(url)
                 results += data['results']
                 done = (data.get('next_link', None) is None)
-            return results
-        except Exception:
-            return None
+        except Exception as e:
+            display.vvvv("Unable to retrive role (id=%s) data (%s), but this is not fatal so we continue: %s" % (role_id, related, to_text(e)))
+        return results
 
     @g_connect
     def get_list(self, what):

lib/ansible/galaxy/role.py

@@ -230,13 +230,13 @@ class GalaxyRole(object):
                                 'Please contact the role author to resolve versioning conflicts, or specify an explicit role version to '
                                 'install.' % ', '.join([v.vstring for v in loose_versions])
                             )
-                        self.version = str(loose_versions[-1])
+                        self.version = to_text(loose_versions[-1])
                     elif role_data.get('github_branch', None):
                         self.version = role_data['github_branch']
                     else:
                         self.version = 'master'
                 elif self.version != 'master':
-                    if role_versions and str(self.version) not in [a.get('name', None) for a in role_versions]:
+                    if role_versions and to_text(self.version) not in [a.get('name', None) for a in role_versions]:
                         raise AnsibleError("- the specified version (%s) of %s was not found in the list of available versions (%s)." % (self.version,
                                                                                                                                          self.name,
                                                                                                                                          role_versions))