Fixing tests following WSS4J upgrades + adding some SAML Subject Confirmation Method tests

Conflicts:
	rt/ws/security/src/test/java/org/apache/cxf/ws/security/wss4j/saml/PolicyBasedSamlTest.java
	services/sts/systests/basic/src/test/java/org/apache/cxf/systest/sts/bearer/BearerTest.java
	systests/ws-security-examples/src/test/resources/org/apache/cxf/systest/wssec/examples/saml/server.xml
	systests/ws-security-examples/src/test/resources/org/apache/cxf/systest/wssec/examples/saml/stax-server.xml
	systests/ws-security/src/test/java/org/apache/cxf/systest/ws/saml/SamlTokenTest.java
	systests/ws-security/src/test/java/org/apache/cxf/systest/ws/saml/client/SamlCallbackHandler.java

Conflicts:
	services/sts/systests/basic/src/test/java/org/apache/cxf/systest/sts/bearer/BearerTest.java
	systests/ws-security/src/test/java/org/apache/cxf/systest/ws/saml/client/SamlCallbackHandler.java
Upgrading to WSS4J 1.6.17
Fixing the build

Conflicts:
	systests/ws-security/src/test/resources/org/apache/cxf/systest/ws/action/server.xml
Fixing failing tests + checkstyle