allowed regions to be unspecified so that untargetted apis can be tested

core/src/test/java/org/jclouds/location/functions/RegionToEndpointOrProviderIfNullTest.java

@@ -62,8 +62,7 @@ public class RegionToEndpointOrProviderIfNullTest {
       fn.apply("2");
    }
 
-   @Test(expectedExceptions = IllegalArgumentException.class)
-   public void testMustHaveEndpoints() {
+   public void testOkIfNoRegionMappings() {
       new RegionToEndpointOrProviderIfNull("leader", URI.create("http://leader"), ImmutableMap.<String, URI> of());
    }