Named blob update api implementation

[mikeyang923]

Named blob update api implementation:

1. Create a new blob with temp TTL
2. Insert a row into MySQL named_blobs_v2 db with state='IN_PROGRESS'
3. Update Blob TTL to infinity
4. Insert a MySQL row with state to be 'READY'

Will schedule a repeating job (eg daily) to 1. try update Blob TTL for active 'IN_PROGRESS' rows and 2. clean up the outdated 'IN_PROGRESS' mysql rows.

[codecov-commenter]

Codecov Report

Base: 73.15% // Head: 73.15% // Increases project coverage by +0.00% :tada:

Coverage data is based on head (10b0ac3) compared to base (7f3d471). Patch coverage: 81.81% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #2247   +/-   ##
=========================================
  Coverage     73.15%   73.15%           
- Complexity    10483    10498   +15     
=========================================
  Files           755      755           
  Lines         57907    57941   +34     
  Branches       7111     7118    +7     
=========================================
+ Hits          42359    42389   +30     
- Misses        13212    13216    +4     
  Partials       2336     2336           

Impacted Files	Coverage Δ
...om/github/ambry/config/MySqlNamedBlobDbConfig.java	100.00% <ø> (ø)
...hub/ambry/frontend/FrontendRestRequestService.java	97.24% <ø> (ø)
...src/main/java/com/github/ambry/rest/RestUtils.java	92.12% <60.00%> (-0.97%)	:arrow_down:
...github/ambry/frontend/AmbryIdConverterFactory.java	95.00% <75.00%> (-1.11%)	:arrow_down:
.../java/com/github/ambry/named/MySqlNamedBlobDb.java	93.05% <90.00%> (-0.44%)	:arrow_down:
.../main/java/com/github/ambry/named/NamedBlobDb.java	100.00% <100.00%> (ø)
...com/github/ambry/frontend/NamedBlobPutHandler.java	92.90% <100.00%> (+0.28%)	:arrow_up:
...n/java/com/github/ambry/clustermap/MockDiskId.java	77.77% <0.00%> (-5.56%)	:arrow_down:
...a/com/github/ambry/network/SSLBlockingChannel.java	75.67% <0.00%> (-5.41%)	:arrow_down:
...va/com/github/ambry/replication/ReplicaThread.java	83.73% <0.00%> (-0.77%)	:arrow_down:
... and 14 more

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