Adjust the tests for mirrormanager2.lib.get_repo_prefix_arch
Adjust the tests for mirrormanager2.lib.get_repo_prefix_arch

Devyani-Divs/mirrormanager2,Devyani-Divs/mirrormanager2,pombredanne/mirrormanager2,Devyani-Divs/mirrormanager2,Devyani-Divs/mirrormanager2,pombredanne/mirrormanager2,pombredanne/mirrormanager2,pombredanne/mirrormanager2