Add libkeyutils to build-base image, or disable building sample(s) about kernelci-core

[gctucker]

The error is:

  HOSTCC  samples/watch_queue/watch_test
/usr/bin/ld: cannot find -lkeyutils
collect2: error: ld returned 1 exit status
make[3]: *** [scripts/Makefile.host:107: samples/watch_queue/watch_test] Error 1

[ihalip]

Still happens in the latest linux-next:
https://storage.kernelci.org/next/master/next-20190924/arm/allmodconfig/gcc-8/build.log

[gctucker]

@ihalip Nothing has been done so far to address this problem, so it's still broken as expected.

[gctucker]

OK I think I'll be able to take a look at this next week.

[gctucker]

@ihalip It looks like this issue can't be reproduced with next-20191014, see the log here:
https://storage.kernelci.org/next/master/next-20191014/arm/allmodconfig/gcc-8/build.log

[gctucker]

And I see that the patch to add samples/watch_queue doesn't need that lib any more, this line has been removed from the patch:

HOSTLDLIBS_watch_test += -lkeyutils

So, I guess this isn't needed any more. I haven't found the email discussing this part of the patch though.

[ihalip]

Didn't find an e-mail either, I guess it was just temporary in Dave's tree as he progressed on the KEY_NOTIFICATIONS feature. I see that indeed this is not failing in recent linux-next builds, so this issue can be closed.