feat(wls): add wls support

- refactor joda time usage to be compatible with wls shipped ones. (1.2.1.x)
- add engine-rest module for wls
- refactor EjbProcessApplication context switching
- harden integration-tests-engine suite test cases
- harden integration-tests-webapps suite test cases
- improve regex for wls (ProcessEnginesFilter.java)

related to CAM-1677,CAM-1678