testutils: add new functions to check for dataplane packets

`receive_pkt_check` and `receive_pkt_verify` had slightly different
functionality and neither were sufficient for complex tests. This change
deprecates them and adds new functions.

The high level `verify_packets` function is sufficient for most tests. When
more complex logic is needed the primitive functions `verify_packet`,
`verify_no_packet`, and `verify_no_other_packets` should be used directly.

All OpenFlow 1.0/1.3 tests are updated to use the new functions. The old
functions are left around for compatibility with out of tree tests.
diff --git a/tests-1.3/match.py b/tests-1.3/match.py
index c45858f..0b473da 100644
--- a/tests-1.3/match.py
+++ b/tests-1.3/match.py
@@ -73,7 +73,7 @@
             logging.info("Sending matching packet %s, expecting output to port %d", repr(name), out_port)
             pktstr = str(pkt)
             self.dataplane.send(in_port, pktstr)
-            receive_pkt_verify(self, [out_port], pktstr, in_port)
+            verify_packets(self, pktstr, [out_port])
 
         for name, pkt in nonmatching.items():
             logging.info("Sending non-matching packet %s, expecting packet-in", repr(name))
@@ -132,7 +132,7 @@
 
         logging.info("Sending packet on matching ingress port, expecting output to port %d", out_port)
         self.dataplane.send(in_port, pktstr)
-        receive_pkt_verify(self, [out_port], pktstr, in_port)
+        verify_packets(self, pktstr, [out_port])
 
         logging.info("Sending packet on non-matching ingress port, expecting packet-in")
         self.dataplane.send(bad_port, pktstr)