8165825: Remove the intermittent keyword from sun/security/krb5/auto/Unreachable.java
Summary: Remove the intermittent keyword
Reviewed-by: weijun

8015595: Test sun/security/krb5/auto/Unreachable.java fails with Timeout error
Summary: Unreachable.java was getting timeout due to PortUnreachableException was not thrown
Reviewed-by: weijun

8151734: Mark Unreachable.java and MaxRetries.java as intermittently failing
Reviewed-by: weijun

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

7162687: enhance KDC server availability detection
Reviewed-by: valeriep