[SSSD] [sssd PR#814][opened] certmap: allow missing KU in OpenSSL version

[sumit-bose]

   URL: https://github.com/SSSD/sssd/pull/814
Author: sumit-bose
 Title: #814: certmap: allow missing KU in OpenSSL version
Action: opened

PR body:
"""
Make sure a missing key-usage (KU) is not treated as an error and is
handled equally in the NSS and OpenSSL implementation

Related to https://bugzilla.redhat.com/show_bug.cgi?id=1660899

Additionally this pull-request contains patches which adds two new certificate
related commands to the sssctl utility. 'sssctl cert-show' displays the content
of the certificate in a format used by SSSD's certificate mapping and matching
rules. 'sssctl cert-map' show the users the certificate is mapped to. Both
commands expect the base64 encoded certificate on the command line.
"""

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/814/head:pr814
git checkout pr814