[stable/nginx-ingress] consider values in nodePorts for LoadBalancer

[bhavin192]

What this PR does / why we need it:

• Makes it possible to specify nodePort values when the controller
  service type is LoadBalancer
• Update README.md
• Bump the version

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• DCO signed
• Chart Version bumped
• Variables are documented in the README.md
• title of the PR contains starts with chart name e.g. [stable/chart]

[k8s-ci-robot]

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[ChiefAlexander]

I am not certain that this is valid. Can you point me to the documentation/code that allows you to define the nodeport when using type load-balancer. All I see is https://kubernetes.io/docs/concepts/services-networking/#publishing-services-service-types where it calls it out as being auto created.

NodePort and ClusterIP services, to which the external load balancer will route, are automatically created.

[ChiefAlexander]

/assign

[bhavin192]

From API reference doc,

The port on each node on which this service is exposed when type=NodePort or LoadBalancer. Usually assigned by the system. If specified, it will be allocated to the service if unused or else creation of the service will fail. Default is to auto-allocate a port if the ServiceType of this Service requires one. More info: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport

https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.14/#serviceport-v1-core

[ChiefAlexander]

/ok-to-test

[bhavin192]

/test pull-charts-e2e

[ChiefAlexander]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bhavin192, ChiefAlexander

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