Improve debug-cli in test framework

Opening debug-cli only makes sense if there is time for user to use it,
so either the run must be debugged or stepped. Only open the debug-cli
in these cases.

Change-Id: Ied276071797a549880d730cda43c59230a412efe
Signed-off-by: Klement Sekera <ksekera@cisco.com>

test/framework.py

@@ -113,8 +113,10 @@ class VppTestCase(unittest.TestCase):
         cls.set_debug_flags(d)
         cls.vpp_bin = os.getenv('VPP_TEST_BIN', "vpp")
         cls.plugin_path = os.getenv('VPP_TEST_PLUGIN_PATH')
-        cls.vpp_cmdline = [cls.vpp_bin, "unix", "{", "nodaemon",
-                           "cli-listen localhost:5002", "}",
+        debug_cli = ""
+        if cls.step or cls.debug_gdb or cls.debug_gdbserver:
+            debug_cli = "cli-listen localhost:5002"
+        cls.vpp_cmdline = [cls.vpp_bin, "unix", "{", "nodaemon", debug_cli, "}",
                            "api-segment", "{", "prefix", cls.shm_prefix, "}"]
         if cls.plugin_path is not None:
             cls.vpp_cmdline.extend(["plugin_path", cls.plugin_path])

test/hook.py

@@ -73,7 +73,7 @@ class PollHook(Hook):
             raise Exception("GDB refused to die...")
 
     def on_crash(self, core_path):
-        if self.testcase.interactive:
+        if self.testcase.debug_core:
             gdb_path = '/usr/bin/gdb'
             if os.path.isfile(gdb_path) and os.access(gdb_path, os.X_OK):
                 # automatically attach gdb