Wip/martyn/u boot installer

Jenkinsfile

@@ -612,11 +612,12 @@ buildCandidates.each { name, arch ->
     }
 }
 
-println("buildOnlyList:")
+/* Add installer */
+println("buildOnlyList")
 println(buildOnlyList)
-if (buildOnlyList.contains("installers")) {
-  /* Add installer */
-  first_pass << [("$name $type"):
+if (buildOnlyList.containsKey('installers')) {
+  println("Got installers")
+  first_pass << [("installers"):
       buildInstallers(installers)
   ]
 }