Add test for fileglob behaviour

I can't find a reference to fileglob anywhere in the testing, but it
is allowed to run on the executor.  It seems worth adding a path to
exercise that.

Change-Id: Ie19d38479d3be34b1a62c6c2ab1506fe99b287e1

tests/fixtures/config/ansible/git/org_plugin-project/playbooks/fileglob_local_bad.yaml

@@ -0,0 +1,5 @@
+- hosts: localhost
+  tasks:
+    - name: fileglob in a bad location
+      debug:
+        msg: '{{ lookup("fileglob", "/tmp/*") }}'

tests/fixtures/config/ansible/git/org_plugin-project/playbooks/fileglob_local_good.yaml

@@ -0,0 +1,5 @@
+- hosts: localhost
+  tasks:
+    - name: fileglob in a good location
+      debug:
+        msg: '{{ lookup("fileglob", zuul.executor.work_root + "/*") }}'

tests/unit/test_v3.py

@@ -2839,6 +2839,8 @@ class FunctionalAnsibleMixIn(object):
             ('block_local_override', 'FAILURE'),
             ('file_local_good', 'SUCCESS'),
             ('file_local_bad', 'FAILURE'),
+            ('fileglob_local_good', 'SUCCESS'),
+            ('fileglob_local_bad', 'FAILURE'),
             ('zuul_return', 'SUCCESS'),
             ('password_create_good', 'SUCCESS'),
             ('password_null_good', 'SUCCESS'),