Add get_param_heat_template.py

get_param_heat_template.py is used to extract a default parameter
from a heat template .hot or heat template environment file .env

Related-task: #PROD-27687
Change-Id: I2c0f649e26e60e086df99d3086894685a9d79424
diff --git a/tcp_tests/fixtures/config_fixtures.py b/tcp_tests/fixtures/config_fixtures.py
index 973e034..8026e5b 100644
--- a/tcp_tests/fixtures/config_fixtures.py
+++ b/tcp_tests/fixtures/config_fixtures.py
@@ -32,6 +32,8 @@
         for test_config in tests_configs.split(','):
             config_files.append(test_config)
 
+    LOG.info("\n" + "-" * 10 + " Initialize oslo.config variables with "
+             "defaults from environment" + "-" * 10)
     config_opts = settings_oslo.load_config(config_files)
 
     if os.path.isfile(config_opts.underlay.ssh_key_file):