Add sample detectors and indices

[ohltyler]

Issue #, if available:

Description of changes:

Backporting sample detectors to opendistro-1.10 branch to include in ODFE 1.10.0 release.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov]

Codecov Report

Merging #295 into opendistro-1.10 will decrease coverage by 0.29%.
The diff coverage is n/a.

@@                 Coverage Diff                 @@
##           opendistro-1.10     #295      +/-   ##
===================================================
- Coverage            42.53%   42.24%   -0.30%     
===================================================
  Files                  108      117       +9     
  Lines                 2586     2831     +245     
  Branches               310      321      +11     
===================================================
+ Hits                  1100     1196      +96     
- Misses                1429     1578     +149     
  Partials                57       57              

Flag	Coverage Δ
#unittests	42.24% <ø> (-0.30%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...bana-plugin/public/redux/reducers/elasticsearch.ts	54.76% <0.00%> (-19.32%)	⬇️
...-detection-kibana-plugin/public/utils/constants.ts	100.00% <0.00%> (ø)
...detection-kibana-plugin/public/pages/main/Main.tsx	0.00% <0.00%> (ø)
...ction-kibana-plugin/public/pages/utils/SideBar.tsx	0.00% <0.00%> (ø)
...tion-kibana-plugin/public/pages/utils/constants.ts	100.00% <0.00%> (ø)
...in/public/components/ContentPanel/ContentPanel.tsx	50.00% <0.00%> (ø)
...ages/DetectorResults/containers/AnomalyResults.tsx	0.00% <0.00%> (ø)
...-kibana-plugin/public/redux/reducers/sampleData.ts	36.36% <0.00%> (ø)
...onents/SampleDetailsFlyout/SampleDetailsFlyout.tsx	9.09% <0.00%> (ø)
...eIndexDetailsCallout/SampleIndexDetailsCallout.tsx	50.00% <0.00%> (ø)
... and 7 more

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[ylwu-amzn]

LGTM. Thanks for the backporting.