spec: Make the package architecture independent
spec: Make the package architecture independent

Since `gerrymander` doesn't create any binaries, make the spec
architecture indepdendent.

Signed-off-by: Kashyap Chamarthy <005b99b234026d47e167244b248f0ff319fdaf16@redhat.com>

Dacelonid/gerrymander,berrange/gerrymander,berrange/gerrymander,Dacelonid/gerrymander