Comment 27 for bug 1796137

From a pre-LXD-seeding instance, the plot is at http://people.canonical.com/~dwatkins/1796137-before.svg and the `snap change` output is:

$ snap change --abs-time 1
Status Spawn Ready Summary
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:33Z Ensure prerequisites for "core" are available
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:33Z Prepare snap "/var/lib/snapd/seed/snaps/core_5328.snap" (5328)
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:33Z Mount snap "core" (5328)
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:33Z Copy snap "core" data
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:34Z Setup snap "core" (5328) security profiles
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:34Z Make snap "core" (5328) available to the system
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:34Z Automatically connect eligible plugs and slots of snap "core"
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:34Z Set automatic aliases for snap "core"
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:34Z Setup snap "core" aliases
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:34Z Run install hook of "core" snap if present
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:34Z Start snap "core" (5328) services
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:35Z Run configure hook of "core" snap if present
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:35Z Ensure prerequisites for "google-cloud-sdk" are available
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:35Z Prepare snap "/var/lib/snapd/seed/snaps/google-cloud-sdk_54.snap" (54)
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:35Z Mount snap "google-cloud-sdk" (54)
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:35Z Copy snap "google-cloud-sdk" data
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:35Z Setup snap "google-cloud-sdk" (54) security profiles
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:35Z Make snap "google-cloud-sdk" (54) available to the system
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:35Z Automatically connect eligible plugs and slots of snap "google-cloud-sdk"
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:36Z Set automatic aliases for snap "google-cloud-sdk"
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:36Z Setup snap "google-cloud-sdk" aliases
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:36Z Run install hook of "google-cloud-sdk" snap if present
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:36Z Start snap "google-cloud-sdk" (54) services
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:36Z Run configure hook of "google-cloud-sdk" snap if present
Done 2018-10-09T20:41:30Z 2018-10-09T20:41:36Z Mark system seeded

......................................................................
Make snap "core" (5328) available to the system

2018-10-09T20:41:34Z INFO Requested daemon restart.

$ snap change --abs-time 2
Status Spawn Ready Summary
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:33Z Generate device key
Done 2018-10-09T20:41:32Z 2018-10-09T20:41:33Z Request device serial