fix example deployment

[kvaps]

This PR fixes two errors in example app:

First is missing selector for the Deployment:

error validating data: ValidationError(Deployment.spec): missing required field "selector" in io.k8s.api.apps.v1.DeploymentSpec; if you choose to ignore these errors, turn validation off with --validate=false

Second is missing name for the Job (replaces generateName):

error: from tj-: cannot use generate name with apply

[harsimranmaan]

Are you using qbec show envKey | kubectl apply -f -? qbec apply should work with generateName

[kvaps]

Yes, I'm going to use qbec with Argo CD, example setup: argoproj/argo-cd#2930 (comment)

[gotwarlost]

I understand the changes to the deployment object but why doesn't generateName work? It is part of the k8s API spec and both kubectl and qbec honor it.

I think one of the unit tests relies on the object having a generated name which is why I cannot accept that particular change.

Happy to have you create a secondary test app under examples/ if you want to keep it tied to the qbec source tree

[kvaps]

I don't know, may be because I was testing it on newest 1.19

[harsimranmaan]

Kubectl has a defect with first apply on generateName. I'll dig up the details. Kubectl create is recommended

[harsimranmaan]

Possibly this kubernetes/kubernetes#44501

[codecov-io]

Codecov Report

Merging #151 (fb6b612) into master (b72657c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #151   +/-   ##
=======================================
  Coverage   73.41%   73.41%           
=======================================
  Files          51       51           
  Lines        4300     4300           
=======================================
  Hits         3157     3157           
  Misses        966      966           
  Partials      177      177           

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