Fix issues related to Simple Operation Tracker response logic

[mikeyang923]

Fix issues related to Simple Operation Tracker response logic:

1. Return 503 Error instead of NOT_FOUND when there is a success in replica
2. Set allReplicas to include all replicas regardless of its state

[codecov-commenter]

Codecov Report

Merging #2178 (32c1c6a) into master (67da981) will decrease coverage by 19.07%. The diff coverage is 20.00%.

@@              Coverage Diff              @@
##             master    #2178       +/-   ##
=============================================
- Coverage     73.03%   53.95%   -19.08%     
+ Complexity    10214     6894     -3320     
=============================================
  Files           737      737               
  Lines         56086    56088        +2     
  Branches       6905     6906        +1     
=============================================
- Hits          40960    30260    -10700     
- Misses        12916    23187    +10271     
- Partials       2210     2641      +431     

Impacted Files	Coverage Δ
...va/com/github/ambry/router/TtlUpdateOperation.java	49.42% <0.00%> (-36.04%)	:arrow_down:
...om/github/ambry/router/SimpleOperationTracker.java	56.93% <50.00%> (-36.87%)	:arrow_down:
...in/java/com/github/ambry/router/CryptoService.java	0.00% <0.00%> (-100.00%)	:arrow_down:
.../java/com/github/ambry/clustermap/PartitionId.java	0.00% <0.00%> (-100.00%)	:arrow_down:
...rc/main/java/com/github/ambry/utils/MockClock.java	0.00% <0.00%> (-100.00%)	:arrow_down:
...ava/com/github/ambry/config/JsonAccountConfig.java	0.00% <0.00%> (-100.00%)	:arrow_down:
...java/com/github/ambry/utils/ByteBufferChannel.java	0.00% <0.00%> (-100.00%)	:arrow_down:
...ava/com/github/ambry/cloud/azure/AzureMetrics.java	0.00% <0.00%> (-100.00%)	:arrow_down:
...a/com/github/ambry/rest/ServerSecurityService.java	0.00% <0.00%> (-100.00%)	:arrow_down:
...va/com/github/ambry/server/ServerHealthStatus.java	0.00% <0.00%> (-100.00%)	:arrow_down:
... and 385 more

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