Get admin secret in ci for taiko e2e tests

.gitlab-ci.yml

@@ -711,6 +711,8 @@ prometheus-alerts:
   script:
     # Retry taiko tests 60 times until they succeed,
     # with a sleep interval of 10s in between tests
+    - export SSO_USERNAME=admin@${DOMAIN}
+    - export SSO_USER_PW=$(python3 -m stackspin $HOSTNAME secrets | grep userbackend_admin_password | cut -d'=' -f2)
     - bash ./.gitlab/ci_scripts/retry_cmd_until_success.sh 60 10 unbuffer python3 -m stackspin $HOSTNAME test --apps $RESOURCE | ts -i | ts
   artifacts:
     paths: