Use the remote erlang.mk repository in tests
Use the remote erlang.mk repository in tests

Otherwise CI won't work.

a12n/erlang.mk,ninenines/erlang.mk,rabbitmq/erlang.mk,hairyhum/erlang.mk,KrzysiekJ/erlang.mk,crownedgrouse/erlang.mk,nevar/erlang.mk,ingwinlu/erlang.mk,jj1bdx/erlang.mk