Clientset for seldon operator

[SachinVarghese]

This PR does the following

• the seldon operator is migrated to a multi-group structure.
• added a make script to create clientsets for the multi-version operator make create-client
• operator client sets for all the existing versions of seldonDeployment CRD

[seldondev]

Fri Dec 13 12:27:18 UTC 2019
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-1258/1.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1258 --build=1

[seldondev]

Fri Dec 13 12:27:20 UTC 2019
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-1258/2.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1258 --build=2

[ukclivecox]

/approve

[seldondev]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cliveseldon

The full list of commands accepted by this bot can be found here.

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• OWNERS [cliveseldon]

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[seldondev]

Fri Dec 13 14:08:45 UTC 2019
The logs for [pr-build] [3] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-1258/3.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1258 --build=3

[seldondev]

Fri Dec 13 14:08:49 UTC 2019
The logs for [lint] [4] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-1258/4.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1258 --build=4