Bug fixes for Optical Intent installation and removal

 - Missing serializer for OchSignalTypes
 - Aliasing of transactional maps in *ResourceStores
 - NPE during Intent removal

Conflicts:
	apps/optical/src/main/java/org/onosproject/optical/OpticalPathProvisioner.java

Change-Id: If882c48553a4a594341ddb743e0c3f420656d954
diff --git a/core/net/src/main/java/org/onosproject/net/intent/impl/CompilerRegistry.java b/core/net/src/main/java/org/onosproject/net/intent/impl/CompilerRegistry.java
index 0ee149a..1b70bc6 100644
--- a/core/net/src/main/java/org/onosproject/net/intent/impl/CompilerRegistry.java
+++ b/core/net/src/main/java/org/onosproject/net/intent/impl/CompilerRegistry.java
@@ -17,6 +17,7 @@
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+
 import org.onosproject.net.intent.Intent;
 import org.onosproject.net.intent.IntentCompiler;
 import org.onosproject.net.intent.IntentException;