Allow healthcheck override without test option

[x4rd0o1Vtx]

SUMMARY

• Use case

Change healthcheck container options while keeping original image test.

ex:

healthcheck:
  interval: 1m
  timeout: 10s
  start_period: 30s
  retries: 3      

• Actual behavior

"Healthcheck" {
  "Test": ["NONE"]
}

• New behavior

"Healthcheck" {
  "Test": <internal docker image test>,
  "Interval": 60000000000,
  "Timeout": 10000000000,
  "StartPeriod": 30000000000,
  "Retries": 3
}

ISSUE TYPE

• Feature Pull Request

COMPONENT NAME

docker_api