[transaction] Add test for aborting transactions by admin

[gaoran10]

This PR needs #1986.

Modifications

Add test for aborting transactions by admin.

Documentation

Check the box below.

Need to update docs?

• doc-required

  (If you need help on updating docs, create a doc issue)

• no-need-doc

  (Please explain why)

• doc

  (If this PR contains doc changes)

[codecov]

Codecov Report

Merging #1987 (0ec6d7f) into master (e931b6d) will decrease coverage by 0.50%.
Report is 5 commits behind head on master.
The diff coverage is 0.20%.

@@             Coverage Diff              @@
##             master    #1987      +/-   ##
============================================
- Coverage     17.72%   17.22%   -0.50%     
  Complexity      751      751              
============================================
  Files           195      195              
  Lines         14156    14569     +413     
  Branches       1322     1353      +31     
============================================
+ Hits           2509     2510       +1     
- Misses        11464    11876     +412     
  Partials        183      183              

Files Changed	Coverage Δ
...streamnative/pulsar/handlers/kop/DelayedFetch.java	0.00% <ø> (ø)
...ative/pulsar/handlers/kop/KafkaCommandDecoder.java	0.31% <0.00%> (-0.02%)	⬇️
...ative/pulsar/handlers/kop/KafkaRequestHandler.java	0.94% <0.00%> (-0.12%)	⬇️
...ndlers/kop/coordinator/group/GroupCoordinator.java	0.00% <0.00%> (ø)
...oordinator/transaction/TransactionCoordinator.java	0.00% <0.00%> (ø)
.../kop/coordinator/transaction/TransactionState.java	0.00% <0.00%> (ø)
...ordinator/transaction/TransactionStateManager.java	0.00% <0.00%> (ø)
...sar/handlers/kop/storage/AppendRecordsContext.java	0.00% <0.00%> (ø)
...sar/handlers/kop/storage/ProducerStateManager.java	0.00% <0.00%> (ø)
...ve/pulsar/handlers/kop/storage/ReplicaManager.java	0.00% <0.00%> (ø)
... and 3 more

... and 7 files with indirect coverage changes