[MLMD] Final updates to lineage view

[avdaredevil]

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Updated metadata to master upstream changes from kubeflow/frontend, refactored imports

• This is the prereq change before I upstream element updates from kubeflow/pipelines that are not part of the shared elements

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/area metadata /area front-end /priority p0 /assign @avdaredevil /cc @kwasi @jlewi

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This change is 

[avdaredevil]

Errors seem irrelevant:

[k8s-ci-robot]

@avdaredevil: The following test failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
kubeflow-metadata-presubmit	7e467e4e6f68c42a6fd3a86070d268813165dafd	link	/test kubeflow-metadata-presubmit

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[kwasi]

Looks good!

/lgtm /approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kwasi

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Needs approval from an approver in each of these files: - ~~[frontend/OWNERS](https://github.com/kubeflow/metadata/blob/master/frontend/OWNERS)~~ [kwasi] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[avdaredevil]

The same issue again, merging...