fix wrong secret reference in test workflow

Author: xetys

.github/workflows/test.yml

@@ -21,7 +21,7 @@ jobs:
         TEST_ZONE_NAME: ${{ secrets.TEST_ZONE_NAME }}
         OS_TENANT_NAME: ${{ secrets.OS_TENANT_NAME }}
         OS_TENANT_ID: ${{ secrets.OS_PROJECT_ID }}
-        OS_DOMAIN_NAME: ${{ secrets.OS_USER_DOMAIN_NAME }}
+        OS_DOMAIN_NAME: ${{ secrets.OS_DOMAIN_NAME }}
         OS_USERNAME: ${{ secrets.OS_USERNAME }}
         OS_PASSWORD: ${{ secrets.OS_PASSWORD }}
         OS_AUTH_URL: ${{ secrets.OS_AUTH_URL }}