Rename dex namespace, add new ytt value to deploy/tools, and remove Tilt

- Rename the test/deploy/dex directory to test/deploy/tools
- Rename the dex namespace to tools
- Add a new ytt value called `pinny_ldap_password` for the tools
  ytt templates
- This new value is not used on main at this time. We intend to use
  it in the forthcoming ldap branch. We're defining it on main so
  that the CI scripts can use it across all branches and PRs.

Signed-off-by: Ryan Richard <richardry@vmware.com>

test/integration/concierge_impersonation_proxy_test.go

@@ -357,7 +357,7 @@ func TestImpersonationProxy(t *testing.T) { //nolint:gocyclo // yeah, it's compl
 					t.Log("curlStdErr: " + curlStdErr.String())
 					t.Log("stdout: " + curlStdOut.String())
 				}
-				t.Log("time: ", time.Now())
+				t.Log("Running curl through the kubectl port-forward port for 70 seconds. Elapsed time:", time.Now().Sub(startTime))
 				time.Sleep(1 * time.Second)
 			}