Add templates for mk22-lab-basic

- add set of templates for mk22-lab-basic
- add env variable LAB_CONFIG_NAME to easy select desired templates
diff --git a/tcp_tests/settings.py b/tcp_tests/settings.py
index d0005a3..5ec518d 100644
--- a/tcp_tests/settings.py
+++ b/tcp_tests/settings.py
@@ -29,6 +29,9 @@
     'TIMESTAT_PATH_YAML', os.path.join(
         LOGS_DIR, 'timestat_{}.yaml'.format(time.strftime("%Y%m%d"))))
 
+LAB_CONFIG_NAME = os.environ.get('LAB_CONFIG_NAME', 'mk22-lab-basic')
+#LAB_CONFIGS_NAME = os.environ.get('LAB_NAME', 'mk22-lab-advanced')
+
 SSH_LOGIN = os.environ.get('SSH_LOGIN', 'root')
 SSH_PASSWORD = os.environ.get('SSH_PASSWORD', 'r00tme')
 SSH_NODE_CREDENTIALS = {"login": SSH_LOGIN,