Fix file permissions to support volumes

[aledbf]

What this PR does / why we need it:

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #4424

Special notes for your reviewer:

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@4b0aabc). Click here to learn what that means.
The diff coverage is 0%.

@@            Coverage Diff            @@
##             master    #4456   +/-   ##
=========================================
  Coverage          ?   58.79%           
=========================================
  Files             ?       88           
  Lines             ?     6674           
  Branches          ?        0           
=========================================
  Hits              ?     3924           
  Misses            ?     2325           
  Partials          ?      425

Impacted Files	Coverage Δ
internal/net/ssl/ssl.go	50.78% <ø> (ø)
cmd/nginx/main.go	6.75% <0%> (ø)
internal/file/structure.go	0% <0%> (ø)

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[ElvinEfendi]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• OWNERS [ElvinEfendi,aledbf]

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[aledbf]

/retest