Update all project to calculate coverage for all projects and generate javadocs only for public APIs.

[bogdandrutu]

No description provided.

[codecov-io]

Codecov Report

Merging #578 into master will decrease coverage by 11.53%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             master     #578       +/-   ##
=============================================
- Coverage     89.52%   77.98%   -11.54%     
- Complexity      580      643       +63     
=============================================
  Files           110      125       +15     
  Lines          2453     3075      +622     
  Branches        216      279       +63     
=============================================
+ Hits           2196     2398      +202     
- Misses          199      612      +413     
- Partials         58       65        +7

Impacted Files	Coverage Δ	Complexity Δ
...agent/instrumentation/ExecutorInstrumentation.java	0% <0%> (ø)	0% <0%> (?)
...n/java/io/opencensus/testing/common/TestClock.java	100% <0%> (ø)	9% <0%> (?)
...io/opencensus/contrib/zpages/ZPageHttpHandler.java	33.33% <0%> (ø)	5% <0%> (?)
...rib/agent/instrumentation/ContextStrategyImpl.java	0% <0%> (ø)	0% <0%> (?)
...ava/io/opencensus/contrib/zpages/ZPageHandler.java	100% <0%> (ø)	1% <0%> (?)
.../opencensus/contrib/zpages/TracezZPageHandler.java	39.81% <0%> (ø)	32% <0%> (?)
...va/io/opencensus/contrib/zpages/ZPageHandlers.java	20% <0%> (ø)	2% <0%> (?)
...in/java/io/opencensus/contrib/agent/AgentMain.java	0% <0%> (ø)	0% <0%> (?)
...census/exporter/trace/logging/LoggingExporter.java	47.05% <0%> (ø)	3% <0%> (?)
...b/agent/instrumentation/ThreadInstrumentation.java	0% <0%> (ø)	0% <0%> (?)
... and 5 more

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