feat(ldap): allow to customize user filter

[vooon]

What type of PR is this?

feature

Which issue does this PR fix:

Fix #2924

What does this PR do / Why do we need it:

If an issue # is not available please add repro steps and logs showing the issue:

Testing done on this change:

Automation added to e2e:

Will this break upgrades or downgrades?

Does this PR introduce any user-facing change?:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.04%. Comparing base (05823cd) to head (bdbd282).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2927      +/-   ##
==========================================
+ Coverage   91.02%   91.04%   +0.02%     
==========================================
  Files         174      174              
  Lines       32636    32644       +8     
==========================================
+ Hits        29707    29722      +15     
+ Misses       2215     2209       -6     
+ Partials      714      713       -1     

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[vooon]

Tested with (&(objectClass=inetorgperson)(!(nsaccountlock=TRUE))(!(userClass=Bot))) - works as expected:

• Zot's DN (bot) can't login anymore,
• Normal user - can.

[andaaron]

@vooon, please sign the commit.

[vooon]

@andaaron done.