VOL-4805

This script is an inital attempt at capturing and documenting testing
resources for interactive and programatic retrieval.  Command line
arguments and eventual filesystem based detection will hints for a
suite of tests to run to evaluate VOLTHA code changes.

make check: run python unit tests

usage:
  % flog.py --help
  % flog.py --usage
  % flog.py --type regression
  % flog.py --attr olt

Recreate patch: start over
  o approval given by: daf & torsten
  o a cycle of squashing roaches reported by lint checking resulted
    in multiple conflicting patches in gerrit.  Abandon the mess and
    submit a clean patch.
  o Only delta introduced is using the updated standard copyright notice.
  o git merge to get branch and master back in sync.

Change-Id: I24292f2b72d134879939f43a84b31ab153d10fa9
diff --git a/scripts/flog/main/help.py b/scripts/flog/main/help.py
new file mode 100644
index 0000000..0141461
--- /dev/null
+++ b/scripts/flog/main/help.py
@@ -0,0 +1,71 @@
+# -*- python -*-
+# -----------------------------------------------------------------------
+# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+
+##-------------------##
+##---]  IMPORTS  [---##
+##-------------------##
+import __main__
+import os
+import sys
+
+## -----------------------------------------------------------------------
+## -----------------------------------------------------------------------
+def show_examples():
+    '''Display examples of command usage'''
+
+    cmd = os.path.basename(__main__.__file__)
+
+    print('''
+%% %s
+  Run all tests (default)
+
+%% %s --type regression
+  Run only regression tests.
+
+%% %s --type smoke
+  Run a quick battery of tests.
+
+%% %s --type suite --test unit --attr olt --attr onu
+  Run module tests for olt and onu.
+
+%% %s --type regression --attr gpon
+  Run regression tests for gpon logic.
+''' % (cmd, cmd, cmd, cmd, cmd))
+#    print( (cmd) * 5) # syntax ?!?
+
+## -----------------------------------------------------------------------
+## -----------------------------------------------------------------------
+def usage():
+    """Display command arguments and usage
+
+    :param err: Error to display due to invalid arg parsing.
+    :type  err: String
+
+    :param arg: --help* command line argument digested by argparse.py
+    :type  arg: String
+
+    :raises  ValueError
+
+    ...versionadded: 1.1
+    """
+
+    cmd = os.path.basename(__main__.__file__)
+    print("USAGE: %s" % cmd)
+    show_examples()
+    sys.exit(0)
+
+# EOF