test-sourceslist-lang-plusminus-options: Use amd64 architecture

This should make the test work on non-amd64 systems

Gbp-Dch: ignore

test/integration/test-sourceslist-lang-plusminus-options

@@ -4,7 +4,7 @@ set -e
 TESTDIR=$(readlink -f $(dirname $0))
 . $TESTDIR/framework
 setupenvironment
-configarchitecture 'native'
+configarchitecture 'amd64'
 
 testlangs() {
 	msgtest 'Test acquired languages for' "$1"