Build fails on JDK 8 and 11

The build of current master branch fails - https://travis-ci.com/github/apache/ranger/builds/223139469

There are several issues:
Issue 1) org.apache.ranger.authorization.presto.authorizer.RangerSystemAccessControlFactory was not able to import com.google.common.base.Throwables.throwIfUnchecked because it was coming from an old copy of Guava's Throwables shaded in hive-exec.
By replacing hive-exec with orc-core in agents-audit module all depending modules use their preferred version of Guava (26.0-jre)

Issue 2) RangerSafenetKeySecure.java uses directly sun.security.pkcs11.SunPKCS11 - a class that is not available in Java 9+ and this breaks the compilation.
This should use reflection to load SunPKCS11 class dynamically.

Issue 3) JAXB is no more part of JDK 11+

Issue 4) JUnit 4 Assert.assertThat() is deprecated in favour of Hamcrest's MatcherAssert.assertThat(). This fixes a compilation issue with JDK11.