Revert "Shutdown rippled before http server in json rpc test to avoid http server potentially receiving messages due to automatic ledger close interval."

This reverts commit 83442825e5e337aa8c83f2dffc33255529147018.
Revert "Update ripple-lib integration tests"

This reverts commit 6c5f88aa250a8f24b4ca0fabf3e19e1135519e16.