8130112: Create a common TEST.properties for @modules in test/sun/security/krb5/auto
Reviewed-by: alanb

8081347: Add @modules to jdk_core tests
Reviewed-by: alanb, joehw, lancea
Contributed-by: alexander.kulyakhtin@oracle.com, alan.bateman@oracle.com, mandy.chung@oracle.com

7089889: Krb5LoginModule.login() throws an exception if used without a keytab
Reviewed-by: xuelei, valeriep