[ozone-cert-rotation] Invalid exit code from ozone cert clean command

Ozone cert clean cli usage is not user friendly.
Below are the reasons :

• Runs without kerberos authentication check

  [root@quasar-ewnsjs-2 ~]# klist
  klist: No credentials cache found (filename: /tmp/krb5cc_0)
  [root@quasar-ewnsjs-2 ~]# /opt/cloudera/parcels/CDH/bin/ozone admin cert clean --db=/var/lib/hadoop-ozone/scm/data789712
  [root@quasar-ewnsjs-2 ~]#
  

• It ask for db-path which can be identified with the help of ozone.scm.db.dirs config.
• Command needs to be run from scm node and it cannot be run from a client node
• There is no response on passing invalid path with invalid exit code.

  root@st-ozone-0mrob1-k26w9:/hwqe/hadoopqe# /opt/cloudera/parcels/CDH/bin/ozone admin cert clean --db=/tmp
  root@st-ozone-0mrob1-k26w9:/hwqe/hadoopqe# echo $?
  0