- switch from using x86_64 TA repo to aarch64 TA repo, now that is
available on nexus3.akraino.org;
- align 7.6.1810 x86_64 base CentOS repo URI with the aarch64 one;
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
Change-Id: I0715779cbb338011d1cc969600807ad8db897cdb