Merge pull request #137 from jenkinsci/developer_connection

set developer connection to https

pom.xml

@@ -62,7 +62,7 @@
 
   <scm>
     <connection>scm:git:https://github.com/${gitHubRepo}.git</connection>
-    <developerConnection>scm:git:git@github.com:${gitHubRepo}.git</developerConnection>
+    <developerConnection>scm:git:https://github.com/${gitHubRepo}.git</developerConnection>
     <tag>${scmTag}</tag>
     <url>https://github.com/${gitHubRepo}</url>
   </scm>