TESTING

Tested:
-first run with "-n -c" renewing an existing cert and obtaining a new one
-"-n -L -u"
-"-p" "-p -q" "-p -c"
-"-d -c"
-L
-u
-z
-p
-x
-e
-q (still does some output, needs more redirecting)
-invalid combinations as specified in usage
-Zimbra versions/OSs: 8.8.8_UBUNTU16, 8.8.12_UBUNTU16, 8.8.11_RHEL7 (CentOS)

Untested:
-N
-a
-H
-s
-j
-w