updated CHANGES according to 0.43.1 release
update es/upstream

to fix test errors due to missing SearchService binding in blob tests
and fix errors on fast and parallel starting and stopping of Nodes
remove quickcheck from the testdependencies

it spilled a warning about not being build for java 7
added tests for crate signal handling
fixup! added tests for crate signal handling
fixup! added tests for crate signal handling
fix tracking of active sql requests
fixup! fixup! added tests for crate signal handling