revert all tests related to docker registry container versions to 2.8.3

packages/zarf-registry/chart/values.yaml

@@ -4,7 +4,7 @@ podLabels: {}
 
 image:
   repository: registry
-  tag: 3.0.0-alpha.1
+  tag: 2.8.3
 
 service:
   name: registry

src/test/common.go

@@ -126,7 +126,7 @@ func (e2e *ZarfE2ETest) GetLogFileContents(t *testing.T, stdErr string) string {
 // SetupDockerRegistry uses the host machine's docker daemon to spin up a local registry for testing purposes.
 func (e2e *ZarfE2ETest) SetupDockerRegistry(t *testing.T, port int) {
 	// spin up a local registry
-	registryImage := "registry:3.0.0-alpha.1"
+	registryImage := "registry:2.8.3"
 	err := exec.CmdWithPrint("docker", "run", "-d", "--restart=always", "-p", fmt.Sprintf("%d:5000", port), "--name", fmt.Sprintf("registry-%d", port), registryImage)
 	require.NoError(t, err)
 }

src/test/e2e/21_connect_creds_test.go

@@ -47,7 +47,7 @@ func TestConnectAndCreds(t *testing.T) {
 
 	stdOut, stdErr, err = e2e.Zarf("tools", "registry", "ls", "127.0.0.1:31337/library/registry")
 	require.NoError(t, err, stdOut, stdErr)
-	require.Contains(t, stdOut, "3.0.0-alpha.1")
+	require.Contains(t, stdOut, "2.8.3")
 	stdOut, stdErr, err = e2e.Zarf("tools", "registry", "ls", "127.0.0.1:31337/grafana/promtail")
 	require.NoError(t, err, stdOut, stdErr)
 	require.Equal(t, stdOut, "")

src/test/external/docker-registry-values.yaml

@@ -1,9 +1,9 @@
 image:
   repository: registry
-  tag: 3.0.0-alpha.1
+  tag: 2.8.3
   pullPolicy: IfNotPresent
 imagePullSecrets:
-    - name: private-registry
+  - name: private-registry
 
 service:
   name: registry