s1885 - Removed hardcoded references to AC service URIs

cadcAccessControl-Server/build.xml

...ol-Server/src/ca/nrc/cadc/ac/server/ldap/LdapUserDAO.java

...l-Server/src/ca/nrc/cadc/ac/server/web/WhoAmIServlet.java

...test/src/ca/nrc/cadc/ac/server/web/WhoAmIServletTest.java

...cadc/ac/server/web/groups/RemoveUserMemberActionTest.java

cadcAccessControl/build.xml

cadcAccessControl/src/ca/nrc/cadc/ac/AC.java

...sControl/src/ca/nrc/cadc/ac/xml/AbstractReaderWriter.java

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

...Tomcat/src/ca/nrc/cadc/tomcat/CadcBasicAuthenticator.java