Add flag to cmds to use AWS profile

[javipolo]

Add a new flag to command line utilities to allow to choose a AWS profile from the aws credentials file

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[codecov-io]

Codecov Report

Merging #1790 into v0.14.x will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           v0.14.x    #1790   +/-   ##
========================================
  Coverage    24.93%   24.93%           
========================================
  Files           98       98           
  Lines         5078     5078           
========================================
  Hits          1266     1266           
  Misses        3673     3673           
  Partials       139      139

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[davidmccormick]

/lgtm