Update .gitlab-ci.yml

.gitlab-ci.yml

 variables:
+    CONFIGFILE:/root/pdr
     DEPLOYMENT_YML: deployment-service.yml
 stages:
     - deploy
 deploy:
     stage: deploy
     script:
-        - export KUBECONFIG=/root/.kube
+        - export KUBECONFIG=$CONFIGFILE
         - kubectl version
         
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