Issue durable log throttle

[shshashwat]

Change log description
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Purpose of the change
(e.g., Fixes #666, Closes #1234)

What the code does
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How to verify it
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[codecov]

Codecov Report

Patch coverage: 96.96% and no project coverage change.

Comparison is base (798d8a2) 86.35% compared to head (2c2921c) 86.35%.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #7038   +/-   ##
=========================================
  Coverage     86.35%   86.35%           
- Complexity    16047    16056    +9     
=========================================
  Files          1031     1031           
  Lines         59815    59847   +32     
  Branches       6071     6076    +5     
=========================================
+ Hits          51653    51682   +29     
- Misses         4988     4989    +1     
- Partials       3174     3176    +2     

Impacted Files	Coverage Δ
...io/pravega/segmentstore/server/logs/Throttler.java	92.30% <ø> (ø)
.../segmentstore/server/logs/ThrottlerCalculator.java	96.22% <96.77%> (+0.17%)	⬆️
...a/segmentstore/server/logs/OperationProcessor.java	89.86% <100.00%> (-0.67%)	⬇️
...io/pravega/segmentstore/storage/WriteSettings.java	100.00% <100.00%> (ø)

... and 20 files with indirect coverage changes

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