Zuul: Remove project name

Zuul no longer requires the project-name for in-repo configuration.
Omitting it makes forking or renaming projects easier.

Change-Id: I507ee0a0fea861f3903323579b3839a891109de5

.zuul.yaml

@@ -1,4 +1,3 @@
----
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -84,7 +83,7 @@
       - ^releasenotes/.*$
     vars:
       tox_env: upgrade
-      osa_test_repo: "openstack/openstack-ansible-os_keystone"
+      osa_test_repo: openstack/openstack-ansible-os_keystone
 
 # Experimental
 - job:
@@ -124,7 +123,6 @@
     nodeset: legacy-ubuntu-xenial-2-node
 
 - project:
-    name: openstack/keystone
     check:
       jobs:
         - keystone-dsvm-functional