Add a cli tool to perform some account metadata related operations

[justinlin-linkedin]

No description provided.

[codecov-io]

Codecov Report

Merging #1268 into master will decrease coverage by 0.53%.
The diff coverage is 6.36%.

@@             Coverage Diff              @@
##             master    #1268      +/-   ##
============================================
- Coverage     72.54%   72.01%   -0.54%     
- Complexity     6218     6219       +1     
============================================
  Files           448      449       +1     
  Lines         35446    35709     +263     
  Branches       4508     4536      +28     
============================================
+ Hits          25716    25717       +1     
- Misses         8552     8808     +256     
- Partials       1178     1184       +6

Impacted Files	Coverage Δ	Complexity Δ
...com/github/ambry/account/AccountMetadataStore.java	100% <ø> (ø)	6 <0> (ø)	⬇️
...ain/java/com.github.ambry/account/AccountTool.java	0% <0%> (ø)	0 <0> (?)
....github.ambry/config/HelixPropertyStoreConfig.java	100% <100%> (ø)	1 <0> (ø)	⬇️
...ain/java/com/github/ambry/account/RouterStore.java	74.03% <41.37%> (-6.24%)	13 <3> (+3)
.../com/github/ambry/account/HelixAccountService.java	87.73% <66.66%> (-0.36%)	44 <6> (+1)
...b.ambry.network/BlockingChannelConnectionPool.java	73.68% <0%> (-2.11%)	11% <0%> (-1%)
...va/com.github.ambry.replication/ReplicaThread.java	86.38% <0%> (-1.71%)	90% <0%> (-2%)
...m.github.ambry.replication/ReplicationMetrics.java	94.92% <0%> (-1.21%)	43% <0%> (-1%)
...github.ambry.rest/AsyncRequestResponseHandler.java	87.29% <0%> (-1.01%)	23% <0%> (ø)
...ain/java/com.github.ambry.router/PutOperation.java	91.72% <0%> (-0.51%)	114% <0%> (-1%)
... and 7 more

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[cgtz]

Did you look into combining this tool and AccountUpdateTool? If its possible, then we could potentially get rid of AccountUpdateTool and use AccountTool for everything.

[justinlin-linkedin]

My plan to push the new account metadata management to prod and then just remove the AccoutUpdateTool.

[jsjtzyy]

Looks good after comments are addressed.