Update object variable to match its type

[connman] / test / Makefile.am

EXTRA_DIST = list-profiles list-elements monitor-elements monitor-state \
                get-state select-network disable-network monitor-networks \
                enable-device disable-device start-scanning simple-agent \
                show-introspection test-compat test-supplicant

MAINTAINERCLEANFILES = Makefile.in