Acceptance test mClientPidTestFixture.authorizer_may_prevent_connection_of_clients fails on mako

Description:
Acceptance test mClientPidTestFixture.authorizer_may_prevent_connection_of_clients fails on mako

steps:
1. install latest mir development branch (1270) on mako
   you can download it from here http://s-jenkins.ubuntu-ci:8080/job/mir-mediumtests-builder-trusty-armhf/1/
2. run mir_acceptance_tests on mako

expected result:
All tests pass

actual result:
mClientPidTestFixture.authorizer_may_prevent_connection_of_clients test fails

log:
[ RUN ] ClientPidTestFixture.authorizer_may_prevent_connection_of_clients
/tmp/buildd/mir-0.1.2+14.04.20131128.1+autopilot0/tests/mir_test_doubles/mock_android_hw.cpp:108: Failure
Failed
Google Test trace:
/tmp/buildd/mir-0.1.2+14.04.20131128.1+autopilot0/tests/mir_test_framework/testing_process_manager.cpp:147: Client
/tmp/buildd/mir-0.1.2+14.04.20131128.1+autopilot0/tests/mir_test_framework/testing_process_manager.cpp:169: Failure
Value of: result.succeeded()
Actual: false
Expected: true
client terminate error=process::Result(child_terminated_normally, failure(1))
[ FAILED ] ClientPidTestFixture.authorizer_may_prevent_connection_of_clients (27 ms)