Update .gitlab-ci.yml

.gitlab-ci.yml

 variables:
     CUCUMBER_TAG:
-        value: "tsa"
-        description: "This determines which test will be runned. Valid options are - 'cache', 'policy', 'signer', 'task', 'negative'."
+      value: "tsa"
+      description: "Enter which tests to be execute. Other valid options are - 'cache', 'policy', 'signer', 'task', 'negative'."
+    BASE_URL:
+      value: "https://gaiax.vereign.com/tsa"
+      description: "Enter the environment on which the services are deployed."
 
 stages:
   - test
@@ -22,7 +25,7 @@ test:
   tags: 
    - amd64-docker
   script:
-    - gradle regressionSuite -PbaseUrl=https://gaiax.vereign.com/tsa -Dcucumber.tags="@${CUCUMBER_TAG}, not @wip" -Dcourgette.threads=1 -Dcourgette.runLevel=Scenario -Dcourgette.rerunFailedScenarios=false -Dcourgette.rerunAttempts=1
+    - gradle regressionSuite -PbaseUrl=${BASE_URL} -Dcucumber.tags="@${CUCUMBER_TAG}, not @wip" -Dcourgette.threads=1 -Dcourgette.runLevel=Scenario -Dcourgette.rerunFailedScenarios=false -Dcourgette.rerunAttempts=1
   artifacts:
     when: always
     reports: