corrected tdnf build install command.
corrected tdnf build install command.

build failing due to tdnf attempting to install
x86_64/gcc-5.3.0-5.ph1.x86_64.rpm

Signed-off-by: Brett Johnson <f6bbf8de8af9fcf8c80733d0caa7a4ef8676c0b7@sdbrett.com>

wy65701436/harbor,steven-zou/harbor,reasonerjt/harbor,wy65701436/harbor,reasonerjt/harbor,wy65701436/harbor,steven-zou/harbor,reasonerjt/harbor,steven-zou/harbor,reasonerjt/harbor,wy65701436/harbor,wy65701436/harbor,steven-zou/harbor,steven-zou/harbor,reasonerjt/harbor,wy65701436/harbor,reasonerjt/harbor,steven-zou/harbor