[freeipa PR#2464][opened] Support interactive prompt for ntp options

[Tiboris]

   URL: https://github.com/freeipa/freeipa/pull/2464
Author: Tiboris
 Title: #2464: Support interactive prompt for ntp options
Action: opened

PR body:
"""
FreeIPA will now ask user for NTP source server
or pool address in interactive mode if there is
no server nor pool specified and autodiscovery
has not found any NTP source in DNS records.
"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/2464/head:pr2464
git checkout pr2464