kontrol: rework the TestUpdateKeys to reproduce crypto/rsa error
kontrol: rework the TestUpdateKeys to reproduce crypto/rsa error

  kontrol_test.go:261: kite2 -> kite3: error calling: authenticationError:
  token: failed parsing JWT token: crypto/rsa: verification error

rjeczalik/kite,ppknap/kite,koding/kite,koding/kite,koding/kite,ppknap/kite,ppknap/kite,rjeczalik/kite,rjeczalik/kite