SLING-7245 - Validate pull requests using Jenkins

Switch to JSON module descriptor.
diff --git a/.sling-module.json b/.sling-module.json
new file mode 100644
index 0000000..1eba720
--- /dev/null
+++ b/.sling-module.json
@@ -0,0 +1,5 @@
+{
+    "jenkins": {
+        "disabled": true
+    }
+}
diff --git a/.sling-module.xml b/.sling-module.xml
deleted file mode 100644
index a402095..0000000
--- a/.sling-module.xml
+++ /dev/null
@@ -1,24 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one
-    or more contributor license agreements.  See the NOTICE file
-    distributed with this work for additional information
-    regarding copyright ownership.  The ASF licenses this file
-    to you 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.
--->
-<sling-module>
-  <jenkins>
-    <enabled>false</enabled>
-  </jenkins>
-</sling-module>