TrackAndGet

[scothis]

Streamline the flow for looking up a resource and watching it for
changes. The Tracker has long lived on the Config object as a peer to
the Client, it's very common to Track() a resource and then Get() that
same resource. Now we can do both, this effectively makes tracking
transparent as TrackAndGet() and Get() have the same method signature.

Before:

c.Tracker.Track(
    ctx,
    tracker.NewKey(
       schema.GroupVersionKind{Version: "v1", Kind: "ServiceAccount"},
       types.NamespacedName{Namespace: parent.Namespace, Name: serviceAccountName},
    ),
    types.NamespacedName{Namespace: parent.Namespace, Name: parent.Name},
)
serviceAccount := corev1.ServiceAccount{}
err := c.Get(ctx, types.NamespacedName{Namespace: parent.Namespace, Name: serviceAccountName}, &serviceAccount)

After:

serviceAccount := corev1.ServiceAccount{}
err := c.TrackAndGet(ctx, types.NamespacedName{Namespace: parent.Namespace, Name: serviceAccountName}, &serviceAccount)

The implementation assumes the ctx extends from a ParentReconciler.

Resolves #164

[codecov]

Codecov Report

Merging #232 (b0a4344) into main (c7766dc) will increase coverage by 0.39%.
The diff coverage is 87.50%.

❗ Current head b0a4344 differs from pull request most recent head d5a278f. Consider uploading reports for the commit d5a278f to get more accurate results

@@            Coverage Diff             @@
##             main     #232      +/-   ##
==========================================
+ Coverage   65.01%   65.41%   +0.39%     
==========================================
  Files           9        9              
  Lines        1052     1067      +15     
==========================================
+ Hits          684      698      +14     
- Misses        347      348       +1     
  Partials       21       21              

Impacted Files	Coverage Δ
reconcilers/reconcilers.go	80.84% <87.50%> (+0.26%)	⬆️

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