Code review comment for ~jocave/plainbox-provider-tpm2:move-to-roots-home

The merge was fine but running tests failed.

[xenial] [10:10:54] starting container
[xenial] [10:10:55] Unable to start ephemeral container!
[bionic] [10:10:56] starting container
[bionic] [10:10:57] Unable to start ephemeral container!
[xenial] output: https://paste.ubuntu.com/p/7d4TZp2TV9/
[xenial] NOTE: unable to execute tests, marked as failed
[xenial] Destroying failed container to reclaim resources
[bionic] output: https://paste.ubuntu.com/p/zWnTMT2NQH/
[bionic] NOTE: unable to execute tests, marked as failed
[bionic] Destroying failed container to reclaim resources
[trusty] [10:11:14] starting container
Device project added to trusty-testing
[trusty] [10:11:25] provisioning container
[trusty] [10:12:42] Starting tests...
[trusty] Found a test script: ./requirements/container-tests-provider-tpm2
[trusty] [10:13:26] container-tests-provider-tpm2: PASS
[trusty] [10:13:26] Fixing file permissions in source directory
[trusty] [10:13:26] Destroying container