TensorFlow 2.1 will be the last TF release supporting Python 2. Python 2 support
[officially ends an January 1, 2020](https://www.python.org/dev/peps/pep-0373/#update).
[As announced earlier](https://groups.google.com/a/tensorflow.org/d/msg/announce/gVwS5RC8mds/dCt1ka2XAAAJ),
TensorFlow will also stop supporting Python 2 starting January 1, 2020, and no
more releases are expected in 2019.

## Major Features and Improvements

	cases := []testCase{
		{
			revision:       "canary",
			version:        "1.21",
			expectedOutput: diag.Messages{},
			expectedError:  nil,
		},
		{
			revision:       "canary",
			version:        "XX",
			expectedOutput: nil,
			expectedError:  fmt.Errorf("invalid version XX, expected format like '1.0'"),
		},
		{
			revision:       "canary",
			version:        "2.0",
			expectedOutput: nil,

			wantException: true,
		},
		{ // case 6: new --revision argument
			args:           strings.Split("--revision canary", " "),
			expectedString: "NAME     CLUSTER     CDS     LDS     EDS     RDS     ECDS     ISTIOD",
			revision:       "canary",
		},
		{ // case 7: supplying type that doesn't select pods should fail
			args:          strings.Split("serviceaccount/sleep", " "),
			wantException: true,

			webhook:     revisionCanonicalWebhook,
			tagName:     "canary",
			whURL:       "",
			whSVC:       "istiod-revision",
			whCA:        "ca",
			numWebhooks: 2,
		},
		{
			name:        "webhook-pointing-to-url",
			webhook:     revisionCanonicalWebhookRemote,
			tagName:     "canary",
			whURL:       remoteInjectionURL,
			whSVC:       "",
			whCA:        "ca",

- Added two client certificate metrics for exec auth:
    - `rest_client_certificate_expiration_seconds` a gauge reporting the lifetime of the current client certificate. Reports the time of expiry in seconds since January 1, 1970 UTC.

fork of the Istio helm templates, refactored to increase modularity and isolation.

Goals:
- Improve upgrade experience: users should be able to gradually roll upgrades, with proper
canary deployments for Istio components. It should be possible to deploy a new version while keeping the
stable version in place and gradually migrate apps to the new version.

  # Retrieve proxy status information via XDS from specific control plane in multi-control plane in-cluster configuration
  # (Select a specific control plane in an in-cluster canary Istio configuration.)
  istioctl ps --xds-label istio.io/rev=default
`,
		Aliases: []string{"ps"},
		RunE: func(c *cobra.Command, args []string) error {
			kubeClient, err := ctx.CLIClientWithRevision(opts.Revision)

  # Retrieve version information via XDS from specific control plane in multi-control plane in-cluster configuration
  # (Select a specific control plane in an in-cluster canary Istio configuration.)
  istioctl x version --xds-label istio.io/rev=default
`

	versionCmd.Flags().VisitAll(func(flag *pflag.Flag) {
		if flag.Name == "short" {
			err := flag.Value.Set("true")

  # Retrieve syncz information via XDS from specific control plane in multi-control plane in-cluster configuration
  # (Select a specific control plane in an in-cluster canary Istio configuration.)
  istioctl x internal-debug syncz --xds-label istio.io/rev=default
`,
		RunE: func(c *cobra.Command, args []string) error {
			kubeClient, err := ctx.CLIClientWithRevision(opts.Revision)

Asia/Thimbu Asia/Thimphu Asia/Tokyo Asia/Tomsk Asia/Ujung_Pandang Asia/Ulaanbaatar Asia/Ulan_Bator Asia/Urumqi Asia/Ust-Nera Asia/Vientiane Asia/Vladivostok Asia/Yakutsk Asia/Yangon Asia/Yekaterinburg Asia/Yerevan Atlantic/Azores Atlantic/Bermuda Atlantic/Canary Atlantic/Cape_Verde Atlantic/Faeroe Atlantic/Faroe Atlantic/Jan_Mayen Atlantic/Madeira Atlantic/Reykjavik Atlantic/South_Georgia Atlantic/St_Helena Atlantic/Stanley Australia/ACT Australia/Adelaide Australia/Brisbane Australia/Broken_Hill Australia/Canberra...