Document permissions for AWS (DynamoDB & Redshift)

[tsotnet]

Signed-off-by: Tsotne Tabidze tsotne@tecton.ai

What this PR does / why we need it: This PR documents necessary permissions for DynamoDB & Redshift (including the Redshift IAM role for accessing S3).

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

Document permissions for AWS (DynamoDB & Redshift)

[codecov-commenter]

Codecov Report

Merging #1753 (b7d8baa) into master (651d066) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1753   +/-   ##
=======================================
  Coverage   83.94%   83.94%           
=======================================
  Files          73       73           
  Lines        6003     6003           
=======================================
  Hits         5039     5039           
  Misses        964      964           

Flag	Coverage Δ
integrationtests	83.85% <ø> (ø)
unittests	64.14% <ø> (ø)

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[achals]

/lgtm

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[APPROVALNOTIFIER] This PR is APPROVED

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[woop]

Nice job @tsotnet!