NAS-2213 Update test-settings.xml to still use the ARC format in the unit-tests.
NAS-2213
Update test-settings.xml to still use the ARC format in the unit-tests.

netarchivesuite/netarchivesuite-svngit-migration,netarchivesuite/netarchivesuite-svngit-migration,netarchivesuite/netarchivesuite-svngit-migration,netarchivesuite/netarchivesuite-svngit-migration,netarchivesuite/netarchivesuite-svngit-migration,netarchivesuite/netarchivesuite-svngit-migration