Since we want to support cross building, we shouldn't hardcode GPG file path, even these files provided on recent version of mock. This fixes build error on some older build environment such as CentOS-7.2. See scylladb/scylla#3002 Signed-off-by: Takuya ASADA <syuu@scylladb.com> Message-Id: <1512668704-6775-1-git-send-email-syuu@scylladb.com> (cherry picked from commit 6ae1559bcd48cc1d602f46a2db89af0e399b3cba)