Pi classes to support P4Runtime action profiles

+ modified default.p4 with ECMP capabilities (via action profiles)
+ sketched translation logic of ONOS groups (in Bmv2GroupProgrammable)
+ replaced existing instances of default.json/p4info with symlinks to
	p4src build directory (to avoid inconsistencies)

Change-Id: If82f0b8ce296c9b616415d99864d216b77645a87
diff --git a/tools/test/p4src/p4-16/p4c-out/default.p4info b/tools/test/p4src/p4-16/p4c-out/default.p4info
new file mode 100644
index 0000000..f898190
--- /dev/null
+++ b/tools/test/p4src/p4-16/p4c-out/default.p4info
@@ -0,0 +1,148 @@
+tables {
+  preamble {
+    id: 33617813
+    name: "table0"
+    alias: "table0"
+  }
+  match_fields {
+    id: 1
+    name: "standard_metadata.ingress_port"
+    bitwidth: 9
+    match_type: TERNARY
+  }
+  match_fields {
+    id: 2
+    name: "hdr.ethernet.dstAddr"
+    bitwidth: 48
+    match_type: TERNARY
+  }
+  match_fields {
+    id: 3
+    name: "hdr.ethernet.srcAddr"
+    bitwidth: 48
+    match_type: TERNARY
+  }
+  match_fields {
+    id: 4
+    name: "hdr.ethernet.etherType"
+    bitwidth: 16
+    match_type: TERNARY
+  }
+  action_refs {
+    id: 16794308
+  }
+  action_refs {
+    id: 16829080
+  }
+  action_refs {
+    id: 16793508
+  }
+  action_refs {
+    id: 16800567
+    annotations: "@defaultonly()"
+  }
+  implementation_id: 285227860
+  direct_resource_ids: 301990488
+  size: 1024
+  with_entry_timeout: true
+}
+actions {
+  preamble {
+    id: 16794308
+    name: "set_egress_port"
+    alias: "set_egress_port"
+  }
+  params {
+    id: 1
+    name: "port"
+    bitwidth: 9
+  }
+}
+actions {
+  preamble {
+    id: 16829080
+    name: "send_to_cpu"
+    alias: "send_to_cpu"
+  }
+}
+actions {
+  preamble {
+    id: 16793508
+    name: "drop"
+    alias: "drop"
+  }
+}
+actions {
+  preamble {
+    id: 16800567
+    name: "NoAction"
+    alias: "NoAction"
+  }
+}
+action_profiles {
+  preamble {
+    id: 285227860
+    name: "ecmp_selector"
+    alias: "ecmp_selector"
+  }
+  table_ids: 33617813
+  with_selector: true
+  size: 64
+}
+counters {
+  preamble {
+    id: 302025528
+    name: "port_counters_control.egress_port_counter"
+    alias: "egress_port_counter"
+  }
+  spec {
+    unit: PACKETS
+  }
+  size: 254
+}
+counters {
+  preamble {
+    id: 301999025
+    name: "port_counters_control.ingress_port_counter"
+    alias: "ingress_port_counter"
+  }
+  spec {
+    unit: PACKETS
+  }
+  size: 254
+}
+direct_counters {
+  preamble {
+    id: 301990488
+    name: "table0_counter"
+    alias: "table0_counter"
+  }
+  spec {
+    unit: PACKETS
+  }
+  direct_table_id: 33617813
+}
+controller_packet_metadata {
+  preamble {
+    id: 2868941301
+    name: "packet_in"
+    annotations: "@controller_header(\"packet_in\")"
+  }
+  metadata {
+    id: 1
+    name: "ingress_port"
+    bitwidth: 9
+  }
+}
+controller_packet_metadata {
+  preamble {
+    id: 2868916615
+    name: "packet_out"
+    annotations: "@controller_header(\"packet_out\")"
+  }
+  metadata {
+    id: 1
+    name: "egress_port"
+    bitwidth: 9
+  }
+}