cleaner kubernetes.yaml generation

[maxandersen]

Description
while working and comparing our yaml with example yaml i noticed a few things that could make ours a bit nicer:

• don't add quotes unless needed (i.e. MINIMIZE_QUOTES )
• don't generate labels/annotations for vcs and similar if those values are not available, i..e. "<>" looks noisy

i.e. generate this:

---
apiVersion: v1
kind: ServiceAccount
metadata:
  annotations:
    app.quarkus.io/build-timestamp: "2020-05-13 - 20:16:21 +0000"
  labels:
    app.kubernetes.io/name: jugchdemo
    app.kubernetes.io/version: 1.0-SNAPSHOT
  name: jugchdemo

instead of

---
apiVersion: "v1"
kind: "ServiceAccount"
metadata:
  annotations:
    app.quarkus.io/vcs-url: "<<unknown>>"
    app.quarkus.io/build-timestamp: "2020-05-13 - 20:16:21 +0000"
    app.quarkus.io/commit-id: "<<unknown>>"
  labels:
    app.kubernetes.io/name: "jugchdemo"
    app.kubernetes.io/version: "1.0-SNAPSHOT"
  name: "jugchdemo"

[geoand]

• The quotes thing should be easy (I would assume) to do in Dekorate by controlling the ObjectMapper.
• The empty values should probably also be fixed in Dekorate although we could just remove them in Quarkus if necessary.

cc @iocanel

[geoand]

I'll take this up in Dekorate

[geoand]

dekorateio/dekorate#509 should take care of both

[geoand]

@iocanel when trying to use dekorate 0.12.1 I am getting:

[ERROR] Failed to execute goal on project quarkus-kubernetes-deployment: Could not resolve dependencies for project io.quarkus:quarkus-kubernetes-deployment:jar:999-SNAPSHOT: The following artifacts could not be resolved: io.dekorate:kubernetes-annotations:jar:noapt:0.12.1, io.dekorate:openshift-annotations:jar:noapt:0.12.1, io.dekorate:knative-annotations:jar:noapt:0.12.1: Failure to find io.dekorate:kubernetes-annotations:jar:noapt:0.12.1 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]