[CTI] Adds links for threat.indicator.event url and reference on Summary Tab

[ecezalp]

Closes elastic/security-team#967

Note: To test this change, #909 must be merged first.

Checklist

Delete any items that are not applicable to this PR.

• Unit or functional tests were updated or added to match the most common scenarios
• Any UI touched in this PR does not create any new axe failures (run axe in browser: FF, Chrome)

[ecezalp]

@elasticmachine merge upstream

[rylnd]

LGTM 👍

[rylnd]

Do you think I should remove these on my row renderer PR? I've got them in common/cti/constants so we could certainly consolidate this.

[ecezalp]

consolidating them is a great idea, I can create a mini chore ticket to tackle this once both of our PRs are merged, I am currently killing this one for an updated implementation as a part of #998

[rylnd]

@elasticmachine merge upstream

[kibanamachine]

💛 Build succeeded, but was flaky

• continuous-integration/kibana-ci/pull-request

• Commit: ca4f0d2

• Storybooks Preview

• Flaky suites:

  • xpack-securitySolutionCypressChrome

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Test Failures

Kibana Pipeline / general / "before all" hook for "should contain the right query".Timeline query tab Query tab "before all" hook for "should contain the right query"

Link to Jenkins

Stack Trace

Failed Tests Reporter:
  - Test has not failed recently on tracked branches

AssertionError: Timed out retrying after 60000ms: Expected to find element: `[data-test-subj="title-13f1c210-9c80-11eb-a156-ab9eca9a4639"]`, but never found it.

Because this error occurred during a `before all` hook we are skipping the remaining tests in the current suite: `Timeline query tab`

Although you have test retries enabled, we do not retry tests when `before all` or `after all` hooks fail
    at Object.openTimelineById (http://localhost:6121/__cypress/tests?p=cypress/integration/timelines/query_tab.spec.ts:16078:15)
    at Context.eval (http://localhost:6121/__cypress/tests?p=cypress/integration/timelines/query_tab.spec.ts:15045:28)

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Metrics [docs]

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
securitySolution	7.3MB	7.3MB	+388.0B

History

• 💔 Build #118930 failed ad6d004
• 💚 Build #117586 succeeded 51e04de

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @ecezalp

[ecezalp]

Closing this PR as the event fields are no longer present on the Threat Summary view (as per the new ACs of elastic/security-team#998. A similar change will be implemented for #998 for the Threat Details section of the Threat Intel tab.