elfutils update signed with the test key

[Chris Jones]

> Another solution (that I prefer) is to manually update the problem app
> using rpm and then running yum to finish updates. That way you still get
> a warning about including packages signed with the test-updates key.

Even easier is to just run with the yum option --nogpgcheck  for the one 
problematic update. In this case 

 > yum update elfutils-libs  --nogpgcheck 
 
will install the update, ignoring the gpg problem for this package.

Chris