Added HeapDumpOnOutOfMemoryError flag for JVM to dump heap to analyze OOM issues in production system. http://www.oracle.com/technetwork/java/javase/clopts-139448.html#gbzrr
Added HeapDumpOnOutOfMemoryError flag for JVM to dump heap to analyze OOM issues in production system.
http://www.oracle.com/technetwork/java/javase/clopts-139448.html#gbzrr

Added location of heap dump to be ONOS_HOME

Change-Id: I52015046a237847e16b59cd8594845208859a363

opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open