fix "income classifier and Alibi anchor explainer" example

[RafalSkolasinski]

• update notes on building s2i images with minikube
• update dependencies (seldon-core, alibi, etc)
• update s2i base image

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[seldondev]

Hi @RafalSkolasinski. Thanks for your PR.

I'm waiting for a SeldonIO or seldonio member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[axsaucedo]

/ok-to-test
/approve
/lgtm

[seldondev]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: axsaucedo

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[seldondev]

Sun Dec 15 10:37:53 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-1266/2.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1266 --build=2

[seldondev]

Sun Dec 15 10:37:55 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-1266/1.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1266 --build=1

[seldondev]

Sun Dec 15 10:47:33 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-1266/3.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1266 --build=3

[seldondev]

Sun Dec 15 10:47:45 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-1266/4.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1266 --build=4