[Packaging] Move config-* out of source section of SPEC

They cause rpmbuild error as follows:

+ popd
+ /usr/lib/rpm/check-buildroot
+ /usr/lib/rpm/redhat/brp-compress
+ /usr/lib/rpm/redhat/brp-strip /usr/bin/strip
+ /usr/lib/rpm/redhat/brp-strip-comment-note /usr/bin/strip /usr/bin/objdump
+ /usr/lib/rpm/redhat/brp-strip-static-archive /usr/bin/strip
+ /usr/lib/rpm/brp-python-bytecompile /usr/bin/python 1
+ /usr/lib/rpm/redhat/brp-python-hardlink
+ /usr/lib/rpm/redhat/brp-java-repack-jars
error: Bad file: /root/rpmbuild/SOURCES/config-x86_64: No such file or directory
error: Bad file: /root/rpmbuild/SOURCES/config-i686-NONPAE: No such file or directory
error: Bad file: /root/rpmbuild/SOURCES/config-i686: No such file or directory