Update the xCAT-dep.repo files in the xcat-dep package to use https

[whowutwut]

Seems like we are having issues with the 101domain message coming back:

Suggest pointing the xCAT-dep.repo file to use https to not hit this problem:
Files affected:

$ find ./ -name "*.repo" -print
./SL6/x86_64/xCAT-dep.repo
./fedora8/x86_64/xCAT-dep.repo
./fedora8/ppc64/xCAT-dep.repo
./sles10/s390x/xCAT-dep.repo
./sles10/x86_64/xCAT-dep.repo
./sles10/ppc64/xCAT-dep.repo
./rh6/s390x/xCAT-dep.repo
./rh6/x86_64/xCAT-dep.repo
./rh6/ppc64/xCAT-dep.repo
./SL5/x86_64/xCAT-dep.repo
./sles11/s390x/xCAT-dep.repo
./sles11/x86_64/xCAT-dep.repo
./sles11/ppc64/xCAT-dep.repo
./fedora9/x86_64/xCAT-dep.repo
./rh5/s390x/xCAT-dep.repo
./rh5/x86_64/xCAT-dep.repo
./rh5/ppc64/xCAT-dep.repo
./rh7/s390x/xCAT-dep.repo
./rh7/ppc64le/xCAT-dep.repo
./rh7/x86_64/xCAT-dep.repo
./rh7/ppc64/xCAT-dep.repo
./fedora13/x86_64/xCAT-dep.repo
./fedora15/x86_64/xCAT-dep.repo
./sles12/ppc64le/xCAT-dep.repo
./sles12/x86_64/xCAT-dep.repo
./fedora12/x86_64/xCAT-dep.repo
./fedora14/x86_64/xCAT-dep.repo

Also recommend changing the name of this file to xcat-dep.repo in lower case.