Fix pytest command in install_and_test.sh

Author: uglide

.github/workflows/install_and_test.sh

@@ -42,4 +42,6 @@ pip install ${PKG}
 pytest -m 'not onlycluster and not graph'
 # RedisCluster tests
 CLUSTER_URL="redis://localhost:16379/0"
-pytest -m 'not onlynoncluster and not redismod and not ssl' --redis-url=${CLUSTER_URL}
+CLUSTER_SSL_URL="rediss://localhost:27379/0"
+pytest -m 'not onlynoncluster and not redismod and not ssl and not graph' \
+  --redis-url="${CLUSTER_URL}" --redis-ssl-url="${CLUSTER_SSL_URL}"