Update CHANGELOG and version mapping for v1.4.3

CHANGELOG.md

@@ -1,5 +1,22 @@
 # Change Log
 
+## [v1.4.3](https://github.com/kubernetes/ingress-gce/tree/v1.4.3) (2019-02-12)
+[Full Changelog](https://github.com/kubernetes/ingress-gce/compare/v1.4.2...v1.4.3)
+
+**Closed issues:**
+
+- GCP - Kubernetes Ingress Backend service unhealthy [\#621](https://github.com/kubernetes/ingress-gce/issues/621)
+- BackendConfig security policy not enforced  [\#616](https://github.com/kubernetes/ingress-gce/issues/616)
+- original http request origin and host headers are overriden [\#179](https://github.com/kubernetes/ingress-gce/issues/179)
+
+**Merged pull requests:**
+
+- reflect readiness probe in health check for NEG enabled ClusterIP service backend \[release-1.4\] [\#633](https://github.com/kubernetes/ingress-gce/pull/633) ([freehan](https://github.com/freehan))
+- do not leak LB when ingress class is changed \[release-1.4\] [\#626](https://github.com/kubernetes/ingress-gce/pull/626) ([agau4779](https://github.com/agau4779))
+- Configure leader election with completely separate k8s client \[release-1.4\] [\#624](https://github.com/kubernetes/ingress-gce/pull/624) ([rramkumar1](https://github.com/rramkumar1))
+
+# Change Log
+
 ## [v1.4.2](https://github.com/kubernetes/ingress-gce/tree/v1.4.2) (2019-01-16)
 [Full Changelog](https://github.com/kubernetes/ingress-gce/compare/v1.4.1...v1.4.2)
 
@@ -617,6 +634,3 @@
 
 
 \* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*
-
-
-\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*

README.md

@@ -42,5 +42,6 @@ The table below describes what version of Ingress-GCE is running on GKE. Note th
        * 1.11.3-gke.14+ -> v1.4.0
        * 1.11.6-gke.2+ -> v1.4.1
        * 1.11.6-gke.6+ -> v1.4.2
+       * 1.11.7-gke.7+ -> v1.4.3
 
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