tests: refactor asf framework code

- Make framework.py classes a subset of asfframework.py classes
- Remove all packet related code from asfframework.py
- Add test class and test case set up debug output to log
- Repatriate packet tests from asf to test directory
- Remove non-packet related code from framework.py and
  inherit them from asfframework.py classes
- Clean up unused import variables
- Re-enable BFD tests on Ubuntu 22.04 and fix
  intermittent test failures in echo_looped_back
  testcases (where # control packets verified but
  not guaranteed to be received during test)
- Re-enable Wireguard tests on Ubuntu 22.04 and fix
  intermittent test failures in handshake ratelimiting
  testcases and event testcase
- Run Wiregard testcase suites solo
- Improve debug output in log.txt
- Increase VCL/LDP post sleep timeout to allow iperf server
  to finish cleanly.
- Fix pcap history files to be sorted by suite and testcase
  and ensure order/timestamp is correct based on creation
  in the testcase.
- Decode pcap files for each suite and testcase for all
  errors or if configured via comandline option / env var
- Improve vpp corefile detection to allow complete corefile
  generation
- Disable vm vpp interfaces testcases on debian11
- Clean up failed unittest dir when retrying failed testcases
  and unify testname directory and failed linknames into
  framwork functions

Type: test

Change-Id: I0764f79ea5bb639d278bf635ed2408d4d5220e1e
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>

test/run_tests.py

@@ -14,12 +14,14 @@ from multiprocessing import Process, Pipe, get_context
 from multiprocessing.queues import Queue
 from multiprocessing.managers import BaseManager
 from config import config, num_cpus, available_cpus, max_vpp_cpus
-from framework import (
+from asfframework import (
     VppTestRunner,
-    VppTestCase,
     get_testcase_doc_name,
     get_test_description,
+    get_failed_testcase_linkname,
+    get_testcase_dirname,
 )
+from framework import VppTestCase
 from test_result_code import TestResultCode
 from debug import spawn_gdb
 from log import (
@@ -1057,6 +1059,13 @@ if __name__ == "__main__":
         )
         exit_code = 0
         while suites and attempts > 0:
+            for suite in suites:
+                failed_link = get_failed_testcase_linkname(
+                    config.failed_dir,
+                    f"{get_testcase_dirname(suite._tests[0].__class__.__name__)}",
+                )
+                if os.path.islink(failed_link):
+                    os.unlink(failed_link)
             results = run_forked(suites)
             exit_code, suites = parse_results(results)
             attempts -= 1