Fix grpcPort and httpPort in v1 CRD

[ukclivecox]

What this PR does / why we need it:

• Fixes the V1 CRD (k8s >= 1.18) which was missing grpcPort and httpPort in OpenAPISchema in CRD definition.
• Fixes protocol_examples notebook which had old grpc_port in example

Which issue(s) this PR fixes:

Fixes #2866

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

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[seldondev]

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[seldondev]

Fri Jan 22 10:29:33 UTC 2021
The logs for [lint] [2] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2868/2.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2868 --build=2

[seldondev]

Fri Jan 22 10:29:38 UTC 2021
The logs for [pr-build] [1] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2868/1.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2868 --build=1