[qa] pull-tester: Cleanup (run keypool, tidy stdout)
[qa] pull-tester: Cleanup (run keypool, tidy stdout)

* Run keypool (takes 6 seconds)
* Print duration of each rpc test
* Structure output (bold, new lines)

syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin