1.1.4 release notes. (#4028)

* Release notes for 1.1.4

* Review feedback.

content/about/notes/1.1.4/index.md

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+---
+title: Istio 1.1.4
+publishdate: 2019-04-24
+icon: notes
+release: 1.1.4
+---
+
+This release includes several bug fixes and improvements to robustness.  This release note describes what's different between Istio 1.1.3 and Istio 1.1.4.
+
+{{< relnote >}}

content/blog/2019/announcing-1.1.4/index.md

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+---
+title: Announcing Istio 1.1.4
+description: Istio 1.1.4 patch release.
+publishdate: 2019-04-24
+attribution: The Istio Team
+release: 1.1.4
+---
+
+We're pleased to announce the availability of Istio 1.1.4. Please see below for what's changed.
+
+{{< relnote >}}

content/boilerplates/notes/1.1.4.md

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+## Behavior change
+
+- Changed the default behavior for Pilot to allow traffic to outside the mesh, even if it is on the same port as an internal service.
+This behavior can be controlled by the `PILOT_ENABLE_FALLTHROUGH_ROUTE` environment variable.
+
+## Bug fixes
+
+- Fixed egress route generation for services of type `ExternalName`.
+
+- Added support for configuring Envoy's idle connection timeout, which prevents running out of
+memory or IP ports over time ([Issue 13355](https://github.com/istio/istio/issues/13355)).
+
+- Fixed a crashing bug in Pilot in failover handling of locality-based load balancing.
+
+- Fixed a crashing bug in Pilot when it was given custom certificate paths.
+
+- Fixed a bug in Pilot where it was ignoring short names used as service entry hosts ([Issue 13436](https://github.com/istio/istio/issues/13436)).
+
+- Added missing `https_protocol_options` to the envoy-metrics-service cluster configuration.
+
+- Fixed a bug in Pilot where it didn't handle https traffic correctly in the fall through route case ([Issue 13386](https://github.com/istio/istio/issues/13386)).
+
+- Fixed a bug where Pilot didn't remove endpoints from Envoy after they were removed from Kubernetes ([Issue 13402](https://github.com/istio/istio/issues/13402)).
+
+- Fixed a crashing bug in the node agent ([Issue 13325](https://github.com/istio/istio/issues/13325)).
+
+- Added missing validation to prevent gateway names from containing dots ([Issue 13211](https://github.com/istio/istio/issues/13211)).
+
+- Fixed bug where [`ConsistentHashLB.minimumRingSize`](/docs/reference/config/networking/v1alpha3/destination-rule/#LoadBalancerSettings-ConsistentHashLB)
+was defaulting to 0 instead of the documented 1024 ([Issue 13261](https://github.com/istio/istio/issues/13261)).
+
+## Small enhancements
+
+- Updated to the latest version of the [Kiali](https://www.kiali.io) add-on.
+
+- Updated to the latest version of [Grafana](https://grafana.com).
+
+- Added validation to ensure Citadel is only deployed with a single replica ([Issue 13383](https://github.com/istio/istio/issues/13383)).
+
+- Added support to configure the logging level of the proxy and Istio control plane (([Issue 11847](https://github.com/istio/istio/issues/11847)).
+
+- Allow sidecars to bind to any loopback address and not just 127.0.0.1 ([Issue 13201](https://github.com/istio/istio/issues/13201)).