tests: Migrate kv delete tests to common framework.

[serathius]

cc @ahrtr @ptabor @spzala

[codecov-commenter]

Codecov Report

Merging #13753 (e3bc51c) into main (d2e5a8c) will decrease coverage by 0.00%.
The diff coverage is n/a.

❗ Current head e3bc51c differs from pull request most recent head a60abee. Consider uploading reports for the commit a60abee to get more accurate results

@@            Coverage Diff             @@
##             main   #13753      +/-   ##
==========================================
- Coverage   72.63%   72.62%   -0.01%     
==========================================
  Files         467      467              
  Lines       38280    38280              
==========================================
- Hits        27804    27801       -3     
- Misses       8666     8673       +7     
+ Partials     1810     1806       -4     

Flag	Coverage Δ
all	72.62% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
client/v3/concurrency/session.go	88.63% <0.00%> (-4.55%)	⬇️
client/pkg/v3/testutil/recorder.go	76.27% <0.00%> (-3.39%)	⬇️
server/storage/mvcc/watchable_store.go	85.14% <0.00%> (-2.90%)	⬇️
client/v3/leasing/cache.go	87.77% <0.00%> (-1.67%)	⬇️
client/v3/leasing/kv.go	89.70% <0.00%> (-1.67%)	⬇️
client/v3/op.go	74.32% <0.00%> (-1.15%)	⬇️
server/etcdserver/api/v3rpc/watch.go	85.90% <0.00%> (-0.68%)	⬇️
client/v3/watch.go	92.77% <0.00%> (-0.41%)	⬇️
server/etcdserver/server.go	84.19% <0.00%> (-0.33%)	⬇️
server/etcdserver/v3_server.go	79.18% <0.00%> (+0.70%)	⬆️
... and 8 more

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[ahrtr]

Looks great!

[spzala]

Nice. Thanks @serathius