Fix flaky e2e tests

[crenshaw-dev]

Noting failed tests and counts here:

• (2) TestSimplePullRequestGenerator - fix here: chore: fix flaky e2e test #11670
• (3) TestNamespacedGetLogsAllowSwitchOnNS
• (2) TestNamespacedImmutableChange - fix here: chore: fix flaky e2e test for immutable fields #11685

  spec.clusterIPs: Invalid value: []string{"10.43.0.10"}: failed to allocate IP 10.43.0.10: provided IP is already allocated

• (1) TestImmutableChange - fix here: chore: fix flaky e2e test for immutable fields #11685

  spec.clusterIPs: Invalid value: []string{"10.43.0.10"}: failed to allocate IP 10.43.0.10: provided IP is already allocated

• (1) TestHelmCrdHook

  no matches for kind "CronTab" in version "stable.example.com/v1"\nensure CRDs are installed first

• (11) TestNamespacedAppLogs

  "Get "https://10.1.0.237:10250/containerLogs/argocd-e2e--test-namespaced-app-logs-zstyf/guestbook-ui-6df84db565-crmh8/guestbook-ui?timestamps=true\": EOF" does not contain "Hi"

• (5) TestAppLogs
• (9) TestNamespacedResourceDiffing - fix here: fix: ssa e2e tests failing after updating to kubectl 1.26 #11753

      	Error:      	Received unexpected error:
      	            	`kubectl apply -n argocd-e2e--test-namespaced-resource-diffing-helty --server-side=true --field-manager=revision-history-manager --validate=false --force-conflicts -f -` failed exit status 1: The Deployment "guestbook-ui" is invalid: 
      	            	* spec.selector: Required value
      	            	* spec.template.metadata.labels: Invalid value: map[string]string(nil): `selector` does not match template `labels`
      	            	* spec.template.spec.containers: Required value
      	            	* spec.selector: Invalid value: "null": field is immutable
  

• (1) TestSelectiveSyncWithNamespace

  time="2022-12-22T04:02:28Z" level=error msg="../../dist/argocd app create test-selective-sync-with-namespace --repo file:///tmp/argo-e2e/testdata.git --dest-server https://kubernetes.default.svc/ --path guestbook-with-namespace --project default --dest-namespace argocd-e2e--test-selective-sync-with-namespace-czbcl --plaintext --server 127.0.0.1:8088 --auth-token *** --insecure failed exit status 20: time="2022-12-22T04:02:28Z" level=fatal msg="rpc error: code = InvalidArgument desc = application spec for test-selective-sync-with-namespace is invalid: InvalidSpecError: Unable to generate manifests in guestbook-with-namespace: rpc error: code = Unknown desc = failed to walk for symlinks in .tmp/_argocd-repo/d2bca6dc-2b5a-472f-8c36-1c88886fb98c/.git/gc.pid: no such file or directory"" execID=93a2e

• (1) TestNamespacedSyncToUnsignedCommit (timeout)
• (1) TestMultiSourceAppWithHelmExternalValueFiles (timeout)
• (1) TestHookBeforeHookCreationFailure - hook_test.go:351: timeout waiting for: operation phase should be Failed, is Succeeded
• (1) TestAutoSyncSelfHealDisabled (timeout)
• (1) TestCRDs

  time="2023-02-21T08:39:23Z" level=error msg="../../dist/argocd app sync test-cr-ds --timeout 10 --prune --plaintext --server 127.0.0.1:8088 --auth-token *** --insecure failed exit status 20: time="2023-02-21T08:39:23Z" level=fatal msg="rpc error: code = Canceled desc = context canceled"" execID=61390