s1970 - more system property setting for local authority discovery

...rc/cadc/ac/client/JsonUserListInputStreamWrapperTest.java

...l/src/test/java/ca/nrc/cadc/ac/client/UserClientTest.java

...t/java/ca/nrc/cadc/ac/json/JsonGroupReaderWriterTest.java

...ava/ca/nrc/cadc/ac/json/JsonUserListReaderWriterTest.java

...st/java/ca/nrc/cadc/ac/json/JsonUserReaderWriterTest.java

.../ca/nrc/cadc/ac/json/JsonUserRequestReaderWriterTest.java

...st/java/ca/nrc/cadc/ac/xml/GroupListReaderWriterTest.java

...ava/ca/nrc/cadc/ac/xml/GroupPropertyReaderWriterTest.java

...c/test/java/ca/nrc/cadc/ac/xml/GroupReaderWriterTest.java

...est/java/ca/nrc/cadc/ac/xml/IdentityReaderWriterTest.java

.../java/ca/nrc/cadc/ac/xml/UserDetailsReaderWriterTest.java

...est/java/ca/nrc/cadc/ac/xml/UserListReaderWriterTest.java

...rc/test/java/ca/nrc/cadc/ac/xml/UserReaderWriterTest.java

.../java/ca/nrc/cadc/ac/xml/UserRequestReaderWriterTest.java