Store experiment results in dedicated directory

Implements #103 (closed) and in order to pass information to lag analysis #91 (closed) is implemented alongside.

Results folder is configurable.

execution/lib/cli_parser.py

@@ -56,8 +56,12 @@ def default_parser(description):
                         help='Only resets the environment. Ignores all other parameters')
     parser.add_argument('--prometheus',
                         metavar='<URL>',
-                        default=os.environ.get('PROMETHEUS_BASE_URL'),
+                        default=os.environ.get('PROMETHEUS_BASE_URL', 'http://localhost:9090'),
                         help='Defines where to find the prometheus instance')
+    parser.add_argument('--path',
+                        metavar='<path>',
+                        default=os.environ.get('RESULT_PATH', 'results'),
+                        help='A directory path for the results')
     return parser
 
 def benchmark_parser(description):