Add equalto Jinja2 test for EL7

CentOS/RHEL 7 install Jinja 2.7.2 by default and this version does not
have some of the newer tests.

Change-Id: Ica892b03ae9573414c0631369ccaa8435c4fe508

test_plugins/el7_tests.py

@@ -0,0 +1,45 @@
+# Copyright 2017, Rackspace US, Inc.
+#
+# 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
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Additional Jinja2 tests for CentOS/RHEL7."""
+
+# NOTE(mhayden): CentOS and RHEL7 ship with Jinja2 2.7.2 and it doesn't have
+# some of the newer tests. This snippet adds those tests so that the tasks that
+# use them will work properly.
+
+
+def test_equalto(value, other):
+    """Test to see if two values are the same."""
+    return value == other
+
+
+def test_greaterthan(value, other):
+    """Check if value is greater than other."""
+    return value > other
+
+
+def test_lessthan(value, other):
+    """Check if value is less than other."""
+    return value < other
+
+
+class TestModule:
+    """Main test class from Ansible."""
+
+    def tests(self):
+        """Add these tests to the list of tests available to Ansible."""
+        return {
+            'equalto': test_equalto,
+            'greaterthan': test_greaterthan,
+            'lessthan': test_lessthan,
+        }