Fixed naming on file vars

cloud-providers/azure.yml

@@ -35,6 +35,7 @@
     SEARCH_URL: https://${AZURE_DNS_NAME}/api/search/v2/
     INDEXER_URL: https://${AZURE_DNS_NAME}/api/indexer/v2/
     DELIVERY_URL: https://${AZURE_DNS_NAME}/api/delivery/v2/
+    FILE_URL: https://${AZURE_DNS_NAME}/api/file/v2/
     AZURE_AD_TENANT_ID: $AZURE_TENANT_ID
     INTEGRATION_TESTER: $AZURE_PRINCIPAL_ID
     AZURE_TESTER_SERVICEPRINCIPAL_SECRET: $AZURE_PRINCIPAL_SECRET
@@ -92,7 +93,7 @@
     PRIVATE_TENANT1: $MY_TENANT
     PRIVATE_TENANT2: tenant2
     #File
-    FILE_SERVICE_HOST: https://${AZURE_DNS_NAME}/api/file/v2/
+    FILE_SERVICE_HOST: $FILE_URL
     USER_ID: "osdu-user"
     EXIST_FILE_ID: "8900a83f-18c6-4b1d-8f38-309a208779cc"