gitlab: Use all=True in most list() calls (#4491)

If `all=True` is not set then by default only 20 records will be
returned when calling `list()`. Use `all=True` so that all records
will be returned.

For the `list()` use where do not desire to retrieve all entries then
use`all=False` to show explicityly that we don't want to get all of
the entries.

Fixes: #3729
Fixes: #4460

plugins/modules/source_control/gitlab/gitlab_hook.py

@@ -268,7 +268,7 @@ class GitLabHook(object):
     @param hook_url Url to call on event
     '''
     def find_hook(self, project, hook_url):
-        hooks = project.hooks.list()
+        hooks = project.hooks.list(all=True)
         for hook in hooks:
             if (hook.url == hook_url):
                 return hook