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]

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[codecov-io]

Codecov Report

Merging #1788 into v0.13.x will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           v0.13.x    #1788   +/-   ##
========================================
  Coverage    25.27%   25.27%           
========================================
  Files           98       98           
  Lines         5088     5088           
========================================
  Hits          1286     1286           
  Misses        3660     3660           
  Partials       142      142

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[davidmccormick]

/lgtm