(1) Change python to python3
(2) Add "rm -rf .git" command
Clear git information after tarball decompression
(3) Add dependency "rpcgen, libtirpc-devel"
Add "rpcgen" modify build error rpcgen command not found
Add "libtirpc-devel" modify build error "XDR library" not found
(4) Upgrade gnulib version
Since the dependent gnulib-devel version is upgraded
(gnulib-devel-0-26.20180720git.fc29.noarch.rpm),
the tarball must also be upgraded to a matching version
Story: 2006728
Task: 37912
Depends-On: https://review.opendev.org/#/c/700793/
Depends-On: https://review.opendev.org/#/c/701162/
Change-Id: I11159c53ff9deab552e5eeab96a51732ec72815b
Signed-off-by: Dongqi Chen <chen.dq@neusoft.com>
568e8f5027