Bumping pom versions to 1.7.0-rc2 and fixing some maven issues

Change-Id: I6169420328333d0916452aa92efbfa961d72e9c4
diff --git a/apps/acl/pom.xml b/apps/acl/pom.xml
index 2d91468..015f099 100644
--- a/apps/acl/pom.xml
+++ b/apps/acl/pom.xml
@@ -26,11 +26,11 @@
     <parent>
         <groupId>org.onosproject</groupId>
         <artifactId>onos-apps</artifactId>
-        <version>1.7.0-SNAPSHOT</version>
+        <version>1.7.0-rc2</version>
     </parent>
 
     <artifactId>onos-app-acl</artifactId>
-    <version>1.7.0-SNAPSHOT</version>
+    <version>1.7.0-rc2</version>
     <packaging>bundle</packaging>
 
     <description>ONOS ACL application</description>