Print status check summary when a status check is completed.

[tejal29]

Related to #176

Should be merged after #2845, #2846

Description

In this change, we print a summary line after every deployment health check is complete.

Output Changes

Before

tejaldesai@@microservices (add_deploy_stable_timer)$ skaffold run --default-repo=gcr.io/tejal-test --status-check
Generating tags...
...
Starting deploy...
kubectl client version: 1.11+
kubectl version 1.12.0 or greater is recommended for use with Skaffold
 - deployment.apps/leeroy-web configured
 - service/leeroy-app configured
 - deployment.apps/leeroy-app configured
Deploy complete in 3.791356548s
Waiting for deployments to stabilize
Deployments stabilized in 6.059712568s
You can also run [skaffold run --tail] to get the logs

After

tejaldesai@@microservices (refactor-break-1)$ skaffold run --default-repo gcr.io/tejal-test --status-check
Generating tags...
...
Starting deploy...
kubectl client version: 1.11+
kubectl version 1.12.0 or greater is recommended for use with Skaffold
 - deployment.apps/leeroy-web configured
 - service/leeroy-app configured
 - deployment.apps/leeroy-app configured
Deploy complete in 2.973935007s
Waiting for deployments to stabilize
 - deployment/leeroy-web is ready. [1/2 deployment(s) still pending]
 - deployment/leeroy-app is ready.
Deployments stabilized in 2.236126583s
You can also run [skaffold run --tail] to get the logs

tejaldesai@@microservices (refactor-break-1

Next PRs

• show deployed resources intermediate states to provide users with some actionable feedback.
• Add pods health check.
  • Refactor current health check code to add Resource interface and Deployment struct which implements the Resource interface
  • Add Pod struct which implements the Resource interface.
• Event API integration for IDEs

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
review them:

• Includes unit tests
• Mentions any output changes.

[codecov]

Codecov Report

Merging #2811 into master will decrease coverage by <.01%.
The diff coverage is 63.33%.

Impacted Files	Coverage Δ
pkg/skaffold/runner/deploy.go	73.68% <100%> (ø)	⬆️
pkg/skaffold/deploy/status_check.go	61.79% <62.06%> (+2.42%)	⬆️

[balopat]

Lgtm - we implemented my comments via pairing