Description of problem:

Man pages of CMCResponse says:

-d <path>
              Path of directory to the NSS database. This option is required.

But without specifying "-d" in cli , it shows the cert.So i think "-d" can be treated as optional.

# CMCResponse  -i cmc.sys_subca_pkcs10.resp
Certificates: 
    Certificate: 
        Data: 
            Version:  v3
            Serial Number: 0x5D0C698
            Signature Algorithm: SHA384withEC - 1.2.840.10045.4.3.3
            Issuer: CN=CA Signing Certificate,OU=gkapoor_RHCS75_update2_ecc,O=Example-rhcs92-CA-ecc
            Validity: 
                Not Before: Friday, May 25, 2018 6:33:27 AM EDT America/New_York
                Not  After: Tuesday, May 25, 2038 6:33:27 AM EDT America/New_York
            Subject: CN=CA Signing Certificate,OU=gkapoor_RHCS75_update2_ecc,O=Example-rhcs92-CA-ecc
            Subject Public Key Info: 
                Algorithm: EC - 1.2.840.10045.2.1

Not sure if we want -d as mandatory or optional.
If we want it as optional, need to change man pages else code change will be needed.

Version-Release number of selected component (if applicable):

10.5 update 2

How reproducible:
always 

Steps to Reproduce:
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Additional info: