[maven-release-plugin] prepare release 2.2.0-alpha.1

Author: dennisoelkers

pom.xml

@@ -13,7 +13,7 @@
     </parent>
 
     <artifactId>usage-statistics</artifactId>
-    <version>2.2.0-SNAPSHOT</version>
+    <version>2.2.0-alpha.1</version>
     <packaging>jar</packaging>
 
     <name>Graylog Usage Statistics Plugin</name>
@@ -48,7 +48,7 @@
         <developerConnection>scm:git:[email protected]:Graylog2/graylog-plugin-anonymous-usage-statistics.git</developerConnection>
         <connection>scm:git:[email protected]:Graylog2/graylog-plugin-anonymous-usage-statistics</connection>
         <url>https://github.com/Graylog2/graylog-plugin-anonymous-usage-statistics</url>
-        <tag>HEAD</tag>
+        <tag>2.2.0-alpha.1</tag>
     </scm>
 
     <properties>