Revert "Bump current API version to 6 for CM5"
Revert "Bump current API version to 6 for CM5"

This reverts commit f638b353f3a4910ea56d24de8b6b0d42f05fa098.

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