Value Types: remove unnecessary prefixes from enumeration constants

Some of our Value types had constants with superflous prefixes
e.g., IpProtocol.IP_PROTO_TCP instead of IpProtocol.TCP

This commit removes those
diff --git a/test_data/of13/flow_add.data b/test_data/of13/flow_add.data
index 854c908..0766375 100644
--- a/test_data/of13/flow_add.data
+++ b/test_data/of13/flow_add.data
@@ -88,7 +88,7 @@
         factory.buildMatch()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))
             .setExact(MatchField.ETH_TYPE, EthType.IPv6)
-            .setExact(MatchField.IP_PROTO, IpProtocol.IP_PROTO_TCP)
+            .setExact(MatchField.IP_PROTO, IpProtocol.TCP)
             .setMasked(MatchField.IPV6_SRC, 
                        IPv6Address.of(0x1CCAFE1CB1101C00l, 0x0028000000000000l),
                        IPv6Address.of(0xFFFFFFFFFFF0FFFFl, 0x1C2C3C0000000000l))
diff --git a/test_data/of13/flow_delete.data b/test_data/of13/flow_delete.data
index 497103f..6148d21 100644
--- a/test_data/of13/flow_delete.data
+++ b/test_data/of13/flow_delete.data
@@ -88,7 +88,7 @@
         factory.buildMatch()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))
             .setExact(MatchField.ETH_TYPE, EthType.IPv6)
-            .setExact(MatchField.IP_PROTO, IpProtocol.IP_PROTO_TCP)
+            .setExact(MatchField.IP_PROTO, IpProtocol.TCP)
             .setMasked(MatchField.IPV6_SRC, 
                        IPv6Address.of(0x1CCAFE1CB1101C00l, 0x0028000000000000l),
                        IPv6Address.of(0xFFFFFFFFFFF0FFFFl, 0x1C2C3C0000000000l))
diff --git a/test_data/of13/flow_delete_strict.data b/test_data/of13/flow_delete_strict.data
index 83d212c..7e4d233 100644
--- a/test_data/of13/flow_delete_strict.data
+++ b/test_data/of13/flow_delete_strict.data
@@ -88,7 +88,7 @@
         factory.buildMatch()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))
             .setExact(MatchField.ETH_TYPE, EthType.IPv6)
-            .setExact(MatchField.IP_PROTO, IpProtocol.IP_PROTO_TCP)
+            .setExact(MatchField.IP_PROTO, IpProtocol.TCP)
             .setMasked(MatchField.IPV6_SRC, 
                        IPv6Address.of(0x1CCAFE1CB1101C00l, 0x0028000000000000l),
                        IPv6Address.of(0xFFFFFFFFFFF0FFFFl, 0x1C2C3C0000000000l))
diff --git a/test_data/of13/flow_modify.data b/test_data/of13/flow_modify.data
index 9b8834d..83234f5 100644
--- a/test_data/of13/flow_modify.data
+++ b/test_data/of13/flow_modify.data
@@ -88,7 +88,7 @@
         factory.buildMatch()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))
             .setExact(MatchField.ETH_TYPE, EthType.IPv6)
-            .setExact(MatchField.IP_PROTO, IpProtocol.IP_PROTO_TCP)
+            .setExact(MatchField.IP_PROTO, IpProtocol.TCP)
             .setMasked(MatchField.IPV6_SRC, 
                        IPv6Address.of(0x1CCAFE1CB1101C00l, 0x0028000000000000l),
                        IPv6Address.of(0xFFFFFFFFFFF0FFFFl, 0x1C2C3C0000000000l))
diff --git a/test_data/of13/flow_modify_strict.data b/test_data/of13/flow_modify_strict.data
index 250adb9..1d6f4c3 100644
--- a/test_data/of13/flow_modify_strict.data
+++ b/test_data/of13/flow_modify_strict.data
@@ -88,7 +88,7 @@
         factory.buildMatch()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))
             .setExact(MatchField.ETH_TYPE, EthType.IPv6)
-            .setExact(MatchField.IP_PROTO, IpProtocol.IP_PROTO_TCP)
+            .setExact(MatchField.IP_PROTO, IpProtocol.TCP)
             .setMasked(MatchField.IPV6_SRC, 
                        IPv6Address.of(0x1CCAFE1CB1101C00l, 0x0028000000000000l),
                        IPv6Address.of(0xFFFFFFFFFFF0FFFFl, 0x1C2C3C0000000000l))
diff --git a/test_data/of13/packet_in.data b/test_data/of13/packet_in.data
index ca7006f..525d144 100644
--- a/test_data/of13/packet_in.data
+++ b/test_data/of13/packet_in.data
@@ -41,7 +41,7 @@
    .setMatch(
         factory.buildMatchV3()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))
-            .setExact(MatchField.ARP_OP, ArpOpcode.ARP_OPCODE_REQUEST)
+            .setExact(MatchField.ARP_OP, ArpOpcode.REQUEST)
         	.build()
     )
     .setData(new byte[] { 97, 98, 99 } );