Expired certificates in testsuite

Starting with Tuesday 20th of March 2018 we are getting test failures in few tests https://jbossws-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/jenkins/job/CXF-CORE-AS-12.0.0/16/testReport/, rootcause of this is using pregenerated jks stores

Caused by: java.security.cert.CertificateExpiredException: NotAfter: Mon Mar 19 19:59:59 EDT 2018
	at sun.security.x509.CertificateValidity.valid(CertificateValidity.java:274)
	at sun.security.x509.X509CertImpl.checkValidity(X509CertImpl.java:629)
	at sun.security.x509.X509CertImpl.checkValidity(X509CertImpl.java:602)
	at org.apache.wss4j.common.crypto.Merlin.verifyTrust(Merlin.java:758)
	... 64 more

Some already expired stores:
./modules/testsuite/cxf-tests/src/test/resources/jaxws/samples/wsse/policy/oasis/META-INF/alice.jks
Valid from: Sat Mar 19 01:00:00 CET 2005 until: Tue Mar 20 00:59:59 CET 2018

./modules/testsuite/cxf-tests/src/test/resources/jaxws/samples/wsse/policy/oasis/WEB-INF/bob.jks
Valid from: Sat Mar 19 01:00:00 CET 2005 until: Tue Mar 20 00:59:59 CET 2018

./modules/testsuite/cxf-tests/src/test/resources/jaxws/samples/wsse/policy/secconv/META-INF/alice.jks
Valid from: Sat Mar 19 01:00:00 CET 2005 until: Tue Mar 20 00:59:59 CET 2018

and soon to be invalid too:
./modules/testsuite/cxf-tests/src/test/resources/jaxws/samples/wsse/policy/basic/sign-encrypt/META-INF/john.jks
Valid from: Tue May 20 12:48:17 CEST 2008 until: Fri May 18 12:48:17 CEST 2018

./modules/testsuite/cxf-tests/src/test/resources/jaxws/samples/wsse/policy/basic/sign-encrypt/WEB-INF/bob2.jks
Valid from: Tue May 20 12:48:17 CEST 2008 until: Fri May 18 12:48:17 CEST 2018

... etc.

We should probably switch to generating all the *-stores in pre test phase like done in wildfly https://github.com/wildfly/wildfly/blob/master/testsuite/integration/basic/pom.xml#L76 to be safe all the time