Fix BrooklynNode.HTTPS_PORT typo

- was previously using same key name as http_port
Fix BrooklynNodeIntegrationTest.testUsesLocation
Merge pull request #919 from aledsage/fix/BrooklynNodeIntegrationTest

Tests now pass - http://brooklyn.builds.cloudsoftcorp.com/job/Brooklyn-Branch-Test-Integration/10/