TOMEE-1231 100% code coverage for ManagedScheduledExecutorServiceImplFactory.java
It also prepares jacoco plugin for the rest of the modules.

git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/trunk@1598596 13f79535-47bb-0310-9956-ffa450edef68
PMD

git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/trunk@1598598 13f79535-47bb-0310-9956-ffa450edef68