Comment 4 for bug 1512980

Fixed in 1:4.2.8p4+dfsg-3ubuntu1, but I missed that pps-tools is in universe when sponsoring, so it's stuck in dep-wait right now. We need to look into whether we want to MIR pps-tools, or if pps-tools is not needed at runtime, or if there is some way to build NTP with PPS support without pps-tools. At a cursory glance it looks like it's a build time dependency for headers only, in which case the current proposal to not require build deps to be in main may resolve this.