Fix failing session-pool tests

Several tests failing in 13.0. As work-around the runOrder is set (see git commits) This must be resolved in a proper way
08:24:39 [INFO] -------------------------------------------------------08:24:39 [INFO] T E S T S*08:24:39* [INFO] -------------------------------------------------------08:24:40 [INFO] Running org.hippoecm.hst.core.jcr.pool.TestJcrHippoRepository*08:24:40* StringMatchFilter: Could not find log4j-filters.txt*08:24:49* 12.10.2018 08:24:49 WARN [org.apache.jackrabbit.core.util.RepositoryLock.acquire():134] Existing lock file /var/lib/jenkins/workspace/o-site-toolkit_release_13.0-IEJ4IZCFIQM2LPPOFBOR77UQDKSTOGKUEKE7PEKCQKESTXR2NHEA/components/session-pool/target/.lock detected. Repository was not shut down properly.08:24:49 [ERROR] Tests run: 2, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 9.877 s <<< FAILURE! - in org.hippoecm.hst.core.jcr.pool.TestJcrHippoRepository*08:24:49* [ERROR] testLocalRepositories(org.hippoecm.hst.core.jcr.pool.TestJcrHippoRepository) Time elapsed: 9.596 s <<< ERROR!08:24:49 javax.jcr.RepositoryException: javax.jcr.RepositoryException: java.lang.reflect.InvocationTargetException*08:24:49* at org.hippoecm.hst.core.jcr.pool.TestJcrHippoRepository.testLocalRepositories(TestJcrHippoRepository.java:33)08:24:49 Caused by: javax.jcr.RepositoryException: java.lang.reflect.InvocationTargetException*08:24:49* at org.hippoecm.hst.core.jcr.pool.TestJcrHippoRepository.testLocalRepositories(TestJcrHippoRepository.java:33)08:24:49 Caused by: java.lang.reflect.InvocationTargetException*08:24:49* at org.hippoecm.hst.core.jcr.pool.TestJcrHippoRepository.testLocalRepositories(TestJcrHippoRepository.java:33)08:24:49 Caused by: java.lang.IllegalArgumentException: Core bootstrap model contains hst nodes*08:24:49* at org.hippoecm.hst.core.jcr.pool.TestJcrHippoRepository.testLocalRepositories(TestJcrHippoRepository.java:33)08:24:49