Introducing Ambry partition state model and update Helix tool

[jsjtzyy]

1. Introduce new state model that incorporates BOOTSTRAP and INACTIVE
   states.
2. Add clustermap config that allows participant to choose which state
   model to use. Previous LeadStandby Model is default option.
3. Update Helix bootstrap tool to supporting specifying state model when
   creating new cluster or adding new state model to existing cluster.

[codecov-io]

Codecov Report

Merging #1228 into master will increase coverage by 14.1%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1228      +/-   ##
============================================
+ Coverage     69.51%   83.62%   +14.1%     
+ Complexity     5552       57    -5495     
============================================
  Files           432        6     -426     
  Lines         33943      348   -33595     
  Branches       4342       38    -4304     
============================================
- Hits          23596      291   -23305     
+ Misses         9146       45    -9101     
+ Partials       1201       12    -1189

Impacted Files	Coverage Δ	Complexity Δ
...ava/com.github.ambry/config/PerformanceConfig.java
...main/java/com.github.ambry.cloud/CloudReplica.java
...m.github.ambry.replication/ReplicationMetrics.java
...ava/com.github.ambry/frontend/SecurityService.java
...b.ambry.cloud/CloudBlobCryptoAgentFactoryImpl.java
...ain/java/com.github.ambry/frontend/Operations.java
...n/java/com.github.ambry.clustermap/Datacenter.java
...github.ambry.messageformat/TtlUpdateSubRecord.java
...in/java/com.github.ambry.cloud/CloudFindToken.java
...i/src/main/java/com.github.ambry/network/Port.java
... and 410 more

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[zzmao]

PROD looks good. Will look at test soon.

[jiajunwang]

For the reset() method in the state model, probably you will need to implement in the future.
"no op" seems to be not right, just a reminder : )

[jiajunwang]

I think you might need to override the following method:

@transition(to = "DROPPED", from = "ERROR")
public void onBecomeDroppedFromError(Message message, NotificationContext context)
throws Exception {
logger.info("Default ERROR->DROPPED transition invoked.");
}

Otherwise, the default clean up behavior won't do anything other than updating the state model.

[jsjtzyy]

Right, will add that method. Thanks for reminding me of this.

[jiajunwang]

Better to explicitly check DEFAULT_STATE_MODEL_DEF here. For the other cases, shall throw an exception the earlier to better.

[jsjtzyy]

Sure, I will also add a test case for the change.