ISPN-4552 Upgrade H2 driver to 1.4.180
ISPN-4550 JpaStoreOOMETest.testProcessClear always fails

* store the data in disk to avoid OOME
ISPN-4446 Use thread local to signal cache removal to components

* Since stop() takes no parameters, the only way to get correct
semantics of cache removal is to use a thread local variable.