Create Google marketplace configuration and a build scripts for cert-manager

[maelvls]

This PR aims at creating the deployer image by following building-deployer-helm.md, i.e.,

• create ./ Dockerfile for the deployer image
• create a ./schema.yaml
• require the cert-manager chart (see readme)
• create the ./chart/cert-manager/application.yaml manifest
• build deployer image as gcr.io/jetstack-mael-valais/jetstack-secure-platform/deployer with

  export REGISTRY=gcr.io/$(gcloud config get-value project | tr ':' '/')
  export APP_NAME=jetstack-secure-platform
  docker build --tag $REGISTRY/$APP_NAME/deployer .

• get the mpdev CLI:

  docker run gcr.io/cloud-marketplace-tools/k8s/dev cat /scripts/dev > /tmp/mpdev && install /tmp/mpdev ~/bin

• get mpdev install to "not fail" (i.e., running the command exits with 0)

  k delete ns test || k create ns test
  mpdev install --deployer=$REGISTRY/$APP_NAME/deployer --parameters='{"name": "test", "namespace": "test"}'

• make sure the deployer job log does not have any error

  k delete ns test || k create ns test
  mpdev install --deployer=$REGISTRY/$APP_NAME/deployer --parameters='{"name": "test", "namespace": "test"}'
  
  # Then check that the logs look fine:
  k -n test logs -l job-name=test-deployer
  
  # Finally run the verification step:
  mpdev verify --deployer=$REGISTRY/$APP_NAME/deployer --parameters='{"name": "test", "namespace": "test"}'

• get mpdev verify to pass

  # Finally run the verification step:
  mpdev verify --deployer=$REGISTRY/$APP_NAME/deployer --parameters='{"name": "test", "namespace": "test"}'

---

Note: PR created during a pairing session with @wallrj. See progress document: https://docs.google.com/document/d/1-iigFCpXbKsscpmjbTkjUJZUognUeXZPGvMrPqo9eXE/edit#.

[maelvls]

Oops, wrong branch?

[wallrj]

Hey @maelvls, thanks for creating the new PR. This is the correct branch. I've re-opened it.
Sorry for screwing up #1

[maelvls]

Progress: publish still fails with

apitools.base.py.exceptions.CommunicationError: Could not reach metadata service: Not Found

I added the role Storage Object Admin but it didn't seem to do it :(

[wallrj]

With the addition of the docker --net cloudbuild option, the deploy step now succeeds:

gsutil cat gs://jetstack-richard/1.1.0.yaml
releaseDate: '2021-01-29T10:38:11Z'
url: gcr.io/jetstack-richard/cert-manager/deployer:1.1.0
digest: 5f4bbce0f3d3085b4aca90e5934cf893415adb6ff987f7f5944e69dc62bd5ca1
releaseNote: Initial release.
releaseTypes:
- Feature
- BugFix
- Security
recommended: true