[RN] Reduce steps required to trust git repositories using self-signed certificates

= Self-signed certificate importing is now easier This enhancement makes it easier for administrators to add a Git provider's self-signed certificate in {prod-short}. See the steps to do so in link: https://access.redhat.com/documentation/en-us/red_hat_openshift_dev_spaces/3.3/html-single/administration_guide/index#deploying-devspaces-with-support-for-git-repositories-with-self-signed-certificates [Git with self-signed certificates].