[freeipa PR#957][opened] Detect the backend crypto library that curl uses

[rcritten]

   URL: https://github.com/freeipa/freeipa/pull/957
Author: rcritten
 Title: #957: Detect the backend crypto library that curl uses
Action: opened

PR body:
"""
In Fedora 27 curl is proposing to switch to using OpenSSL as
the crypto backend instead of NSS. This requires a new set of
arguments to certmonger to bootstrap fetching the IPA RA cert.

Debian/Ubuntu are still currently using an NSS-backed curl
so support both methods for now.

https://pagure.io/freeipa/issue/7076
"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/957/head:pr957
git checkout pr957