Enable couchdb persist_path in a distributed environment as well (#4290)
Enable couchdb persist_path in a distributed environment as well (#4290)

* Skip clustering when nodes are already in the cluster
* Enable couchdb persist_path for a distributed environment as well

jeremiaswerner/openwhisk,RSulzmann/openwhisk,houshengbo/openwhisk,style95/openwhisk,rabbah/openwhisk,akrabat/openwhisk,openwhisk/openwhisk,jasonpet/openwhisk,akrabat/openwhisk,openwhisk/openwhisk,openwhisk/openwhisk,rabbah/openwhisk,sven-lange-last/openwhisk,rabbah/openwhisk,jasonpet/openwhisk,rabbah/openwhisk,jasonpet/openwhisk,rabbah/openwhisk,sven-lange-last/openwhisk,houshengbo/openwhisk,jeremiaswerner/openwhisk,houshengbo/openwhisk,style95/openwhisk,style95/openwhisk,houshengbo/openwhisk,markusthoemmes/openwhisk,sven-lange-last/openwhisk,csantanapr/incubator-openwhisk,jasonpet/openwhisk,akrabat/openwhisk,jasonpet/openwhisk,jeremiaswerner/openwhisk,RSulzmann/openwhisk,openwhisk/openwhisk,akrabat/openwhisk,houshengbo/openwhisk,jasonpet/openwhisk,akrabat/openwhisk,csantanapr/incubator-openwhisk,RSulzmann/openwhisk,jeremiaswerner/openwhisk,RSulzmann/openwhisk,openwhisk/openwhisk,RSulzmann/openwhisk,csantanapr/incubator-openwhisk,markusthoemmes/openwhisk,RSulzmann/openwhisk,jeremiaswerner/openwhisk,markusthoemmes/openwhisk,rabbah/openwhisk,style95/openwhisk,houshengbo/openwhisk,style95/openwhisk,csantanapr/incubator-openwhisk,akrabat/openwhisk,markusthoemmes/openwhisk,akrabat/openwhisk,sven-lange-last/openwhisk,jeremiaswerner/openwhisk,sven-lange-last/openwhisk,markusthoemmes/openwhisk,csantanapr/incubator-openwhisk,sven-lange-last/openwhisk,style95/openwhisk,markusthoemmes/openwhisk,jasonpet/openwhisk,csantanapr/incubator-openwhisk,markusthoemmes/openwhisk,style95/openwhisk,rabbah/openwhisk,csantanapr/incubator-openwhisk,openwhisk/openwhisk,houshengbo/openwhisk,sven-lange-last/openwhisk,RSulzmann/openwhisk,jeremiaswerner/openwhisk,markusthoemmes/openwhisk