Revert "add squash to config structure tags to make decoding possible…

[ashmeenkaur]

… from legacy flagStorage & mountConfig. (#2044)"

This reverts commit d4451a4.

Reason: Found a better way to do the conversion. Did not realise earlier that with this approach, changes were required in legacy mount config and yaml v3 can't decode "squash" flags.

Description

Link to the issue in case of a bug fix.

NA

Testing details

1. Manual - NA
2. Unit tests - NA
3. Integration tests - NA

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 55 lines in your changes missing coverage. Please review.

Project coverage is 72.03%. Comparing base (a1d8786) to head (4bcc5fe).

Files	Patch %	Lines
cfg/config.go	0.00%	55 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2058      +/-   ##
==========================================
+ Coverage   72.00%   72.03%   +0.02%     
==========================================
  Files          99       99              
  Lines       10869    10869              
==========================================
+ Hits         7826     7829       +3     
+ Misses       2711     2708       -3     
  Partials      332      332              

Flag	Coverage Δ
unittests	72.03% <0.00%> (+0.02%)	⬆️

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