Added TransactionRetentionOnFailureTest

[kptfh]

Added TransactionRetentionOnFailureTest that checks whether transaction:

• removed on failed lock;
• retains on failed mutation

[codecov-io]

Codecov Report

Merging #55 into develop will increase coverage by 0.13%.
The diff coverage is 85.71%.

@@              Coverage Diff              @@
##             develop      #55      +/-   ##
=============================================
+ Coverage      86.68%   86.81%   +0.13%     
- Complexity       218      219       +1     
=============================================
  Files             23       23              
  Lines            766      766              
  Branches          68       68              
=============================================
+ Hits             664      665       +1     
  Misses            67       67              
+ Partials          35       34       -1

Impacted Files	Coverage Δ	Complexity Δ
...nusgraph/aerospike/operations/BasicOperations.java	97.61% <ø> (ø)	21 <0> (ø)	⬇️
...ph/aerospike/operations/BasicMutateOperations.java	100% <ø> (ø)	15 <0> (ø)	⬇️
...raph/aerospike/operations/BasicLockOperations.java	85.1% <100%> (ø)	37 <0> (ø)	⬇️
.../aerospike/transaction/WriteAheadLogCompleter.java	78.65% <80%> (ø)	15 <0> (ø)	⬇️
...ka/janusgraph/aerospike/AerospikeStoreManager.java	83.33% <0%> (+1.66%)	17% <0%> (+1%)	⬆️

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