feat: add support for group push rules

Add the GroupPushRules and GroupPushRulesManager classes.

Closes: #1259

1 files changed, 34 insertions, 0 deletions

diff --git a/docs/gl_objects/groups.rst b/docs/gl_objects/groups.rst
index c4d9fdc..b9b865a 100644
--- a/docs/gl_objects/groups.rst
+++ b/docs/gl_objects/groups.rst
@@ -376,3 +376,37 @@ Delete a group hook::
     group.hooks.delete(hook_id)
     # or
     hook.delete()
+
+Group push rules
+==================
+
+Reference
+---------
+
+* v4 API:
+
+  + :class:`gitlab.v4.objects.GroupPushRules`
+  + :class:`gitlab.v4.objects.GroupPushRulesManager`
+  + :attr:`gitlab.v4.objects.Group.pushrules`
+
+* GitLab API: https://docs.gitlab.com/ee/api/groups.html#push-rules
+
+Examples
+---------
+
+Create group push rules (at least one rule is necessary)::
+
+    group.pushrules.create({'deny_delete_tag': True})
+
+Get group push rules (returns None is there are no push rules)::
+
+    pr = group.pushrules.get()
+
+Edit group push rules::
+
+    pr.branch_name_regex = '^(master|develop|support-\d+|release-\d+\..+|hotfix-.+|feature-.+)$'
+    pr.save()
+
+Delete group push rules::
+
+    pr.delete()