nginx-ingress: bump up version to 1.0.4 in the README (#8124)

* nginx-ingress: bump to 1.0.4

* Disable builtin ssl_session_cache solving the problem with OpenSSL consuming memory.
* Print warning only instead of error if no IngressClass permission is available.

* nginx-ingress: bump to 1.0.4 in the README

README.md

@@ -153,7 +153,7 @@ Note: Upstart/SysV init based OS types are not supported.
   - [rbd-provisioner](https://github.com/kubernetes-incubator/external-storage) v2.1.1-k8s1.11
   - [cert-manager](https://github.com/jetstack/cert-manager) v1.5.4
   - [coredns](https://github.com/coredns/coredns) v1.8.0
-  - [ingress-nginx](https://github.com/kubernetes/ingress-nginx) v1.0.0
+  - [ingress-nginx](https://github.com/kubernetes/ingress-nginx) v1.0.4
 
 ## Container Runtime Notes