[hdfs] OPSAPS-24266 No way to run rolling upgrade command outside of upgrade wizard
[hdfs] OPSAPS-24266 No way to run rolling upgrade command outside of upgrade wizard

Added api method for invoking "/{clusterName}/commands/rollingUpgrade"

The command performs rolling upgrade for services in a cluster.

cdapio/cm_api,cdapio/cm_api,cdapio/cm_api,cloudera/cm_api,cdapio/cm_api,cloudera/cm_api,cloudera/cm_api