Use SPDX identifier in POMs (#979)

Use SPDX identifier in POMs

This replaces the custom name with an SPDX identifier to enable tooling to automatically detect the correct license.

See https://spdx.org/licenses/Apache-2.0.html

Author: TheMrMilchmann

pom.xml

@@ -33,7 +33,7 @@
 
     <licenses>
         <license>
-            <name>Apache License, Version 2.0</name>
+            <name>Apache-2.0</name>
             <url>https://www.apache.org/licenses/LICENSE-2.0</url>
             <distribution>repo</distribution>
         </license>