CORD-413 Implement MPLS Termination in OFDPA3 pipeliner

Additionally, this patch includes
- Minor refactoring
- Skip method length checkstyle for FlowEntryBuilder::hasSetField

Change-Id: I7887f454f552a9e346c323524f359929deadf427
diff --git a/core/api/src/main/java/org/onosproject/net/flow/instructions/ExtensionTreatmentType.java b/core/api/src/main/java/org/onosproject/net/flow/instructions/ExtensionTreatmentType.java
index f036638..ec7cb15 100644
--- a/core/api/src/main/java/org/onosproject/net/flow/instructions/ExtensionTreatmentType.java
+++ b/core/api/src/main/java/org/onosproject/net/flow/instructions/ExtensionTreatmentType.java
@@ -49,6 +49,7 @@
         NICIRA_PUSH_NSH(38),
         NICIRA_POP_NSH(39),
         OFDPA_SET_VLAN_ID(64),
+        OFDPA_SET_MPLS_TYPE(65),
         NICIRA_TUN_GPE_NP(111),
         NICIRA_SET_NSH_SPI(113),
         NICIRA_SET_NSH_SI(114),