Remove fakeclient and use testenv for flux cmd tests

Remove use of the fake client, and replace with a real client connected to the
testEnv.

This required fixes to the yaml files as the testEnv has stricter verifcation
of objects. This also meant it was not possible to test a GitRepository with
a missing artifact since that is not a valid state.

The tests are slower than before, taking around 7-10 seconds each because the
 testEnv is setup and destroyed for every test. These will be sped up in a
 follow up PR.

Signed-off-by: Allen Porter <allen@thebends.org>

cmd/flux/main_e2e_test.go

@@ -15,12 +15,12 @@ func TestMain(m *testing.M) {
 	// Ensure tests print consistent timestamps regardless of timezone
 	os.Setenv("TZ", "UTC")
 
-	// Install Flux
-	km, err := NewTestEnvKubeManager(ExistingClusterMode)
+	// Install Flux.
+	// Creating the test env manager sets rootArgs client flags
+	_, err := NewTestEnvKubeManager(ExistingClusterMode)
 	if err != nil {
 		panic(fmt.Errorf("error creating kube manager: '%w'", err))
 	}
-	rootCtx.kubeManager = km
 	output, err := executeCommand("install --components-extra=image-reflector-controller,image-automation-controller")
 	if err != nil {
 		panic(fmt.Errorf("install falied: %s error:'%w'", output, err))