Cleanup of docker images

[aledbf]

What this PR does / why we need it:

• update go to 1.13
• update alpine image to 3.10
• update qemu-static to 4.1.0-1
• update kind to 5.1
• move docker images to images directory

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

[codecov-io]

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@@            Coverage Diff            @@
##             master    #4528   +/-   ##
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  Coverage          ?   59.05%           
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  Files             ?       89           
  Lines             ?     6811           
  Branches          ?        0           
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  Hits              ?     4022           
  Misses            ?     2350           
  Partials          ?      439

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[aledbf]

/test all

[ElvinEfendi]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, ElvinEfendi

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