elements/bootstrap/glibc.bst: upate tp 2.28-98-g5cbb73004b
This fixes following CVE:
This updates glibc 2.28 to the same commit used by fedora.
This also switches to tracking latest commits to 2.28 stable branch instead of tags which won't happen there.
Clear cpe data from stage1 which was wrong and isn't needed.
Edited by Emerson Bernier