--health-start-period value isn't shown when pretty inspecting service about cli HOT 1 CLOSED

Trying to reproduce the issue to check if it's still current;

docker service create --name foo nginx:alpine
docker service update foo --health-start-period 2m

Inspecting in the default (JSON) format:

docker service inspect foo | grep -i health -n2  
                    "Init": false,
16-                    "StopGracePeriod": 10000000000,
17:                    "Healthcheck": {
18-                        "StartPeriod": 120000000000
19-                    },

Or, when using the --format option;

docker service inspect --format='{{json .Spec.TaskTemplate.ContainerSpec.Healthcheck }}' foo
{"StartPeriod":120000000000}

So it looks like it's indeed still missing when using the --pretty option:

docker service inspect --pretty foo | grep -i health

Given that the information is known by the CLI (it's present in the JSON output), I suspect this needs a change in the Go template that is used for the --pretty output;

Looks like that template is currently missing a section for HealthChecks, so something would have to be added, similar to what was done in 3ae2d4b#diff-cf223d788e2813f2abd145d9036bd6c2 (#1006) to add configs and secrets to the template

from cli.