Update katib components

[richardsliu]

• Update katib components to support TFJob hyperparameter tuning
• Allow katib studyjobcontroller to delete pods
• Add ambassador annotation to katib-ui
• Fixed katib url in centraldashboard
• Fixed bug in update_components script

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This change is 

[richardsliu]

/assign @YujiOshima

[YujiOshima]

@richardsliu Thanks! /lgtm

[YujiOshima]

@richardsliu Could you remove vizier-core NodePort? Related #1982.

[richardsliu]

@YujiOshima Done.

[YujiOshima]

Thanks! LGTM but I don't have lgtm, approve permission.

[richardsliu]

/assign @lluunn

[lluunn]

/lgtm
/approve

[k8s-ci-robot]

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[k8s-ci-robot]

@richardsliu: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
kubeflow-presubmit	f518aae	link	/test kubeflow-presubmit

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