Throttler/vreplication: fix app name used by VPlayer

[shlomi-noach]

Description

VPlayer was incorrectly identifying itself to the throttler as vcopier. As result, running ApplyThrottlerConfig --throttle-app=vplayer made no effect on VPlayer. This PR fixes the problem.

Related Issue(s)

Context: #16575 (this PR does not fix this issue, just related)

Backports

This is a bug. Backporting to 20, 19, 18 where this issue is relevant.

Checklist

• "Backport to:" labels have been added if this change should be back-ported to release branches
• If this change is to be back-ported to previous releases, a justification is included in the PR description
• Tests were added or are not required
• Did the new or modified tests pass consistently locally and on CI?
• Documentation was added or is not required

Deployment Notes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.76%. Comparing base (bf0c5f8) to head (88c6758).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16578      +/-   ##
==========================================
- Coverage   68.77%   68.76%   -0.02%     
==========================================
  Files        1556     1556              
  Lines      199812   199812              
==========================================
- Hits       137419   137399      -20     
- Misses      62393    62413      +20     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.