Add config option "production"

Related-Prod: PRODX-29973
Change-Id: Id0a6f408e8121d2f7a456df5925e3d105822ef19
(cherry picked from commit 38993f0ddc2b3af6859a2c8a8efea052d338b9db)
diff --git a/tempest/config.py b/tempest/config.py
index cbfa7b5..b81fd3e 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -1373,6 +1373,11 @@
                      "will be appended in case of multiple Tempest runs, "
                      "so the file will contain a list of resources created "
                      "during all Tempest runs."),
+    cfg.BoolOpt('production',
+                default=True,
+                help="The boolean flag to specify the type of environment. "
+                     "Skip tests that cannot be run in production. "
+                     "For example: create/delete TLDs in Designate tests."),
 ]
 
 _opts = [