feat(deps): adopt flatten plugin and google-cloud-shared-dependencies

[yangnuoyu]

No description provided.

[codecov]

Codecov Report

Merging #350 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@ Coverage Diff @@## master #350 +/- ##
============================================
- Coverage 80.26% 80.24% -0.02% 
Complexity 1102 1102 ============================================
Files 105 105 Lines 6815 6815 Branches 364 364 ============================================
- Hits 5470 5469 -1 - Misses 1146 1148 +2 + Partials 199 198 -1 

Impacted Files	Coverage Δ	Complexity Δ
...om/google/cloud/bigtable/emulator/v2/Emulator.java	58.26% <0.00%> (-0.87%)	14.00% <0.00%> (ø%)

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[igorbernstein2]

Please attach a diff of how the dependencies change for end users

[kolea2]

will review once looking at diff

accident

[stephaniewang526]

Please attach a diff of how the dependencies change for end users

@igorbernstein2 there is no change in dependency list for end users -- i added a kokoro check for this in dependencies.sh to ensure accuracy. The only difference is that transitive dependencies are resolved to be direct. i will share my doc with you for further details. Thanks.

[igorbernstein2]

Looking at the main artifact, the proposed change will affect the following deps (by pulling them up to the top level).

[INFO] | \- javax.annotation:javax.annotation-api:jar:1.3.2:compile
[INFO] | +- com.google.http-client:google-http-client:jar:1.36.0:compile
[INFO] | | +- org.apache.httpcomponents:httpclient:jar:4.5.12:compile
[INFO] | | | +- commons-logging:commons-logging:jar:1.2:compile
[INFO] | | | \- commons-codec:commons-codec:jar:1.11:compile
[INFO] | | +- org.apache.httpcomponents:httpcore:jar:4.4.13:compile
[INFO] | | \- io.opencensus:opencensus-contrib-http-util:jar:0.24.0:compile
[INFO] | \- com.google.http-client:google-http-client-jackson2:jar:1.36.0:compile
[INFO] | \- com.fasterxml.jackson.core:jackson-core:jar:2.11.1:compile
[INFO] | +- com.google.guava:failureaccess:jar:1.0.1:compile
[INFO] | +- com.google.guava:listenablefuture:jar:9999.0-empty-to-avoid-conflict-with-guava:compile
[INFO] | +- org.checkerframework:checker-compat-qual:jar:2.5.5:compile
[INFO] | +- com.google.errorprone:error_prone_annotations:jar:2.4.0:compile
[INFO] | \- com.google.j2objc:j2objc-annotations:jar:1.3:compile
[INFO] | \- com.google.code.gson:gson:jar:2.8.6:compile
[INFO] | +- org.apache.commons:commons-lang3:jar:3.5:runtime
[INFO] | \- org.conscrypt:conscrypt-openjdk-uber:jar:2.2.1:runtime
[INFO] | \- org.codehaus.mojo:animal-sniffer-annotations:jar:1.19:runtime

This means that those libraries might change version in customer applications if bigtable was tied for a version. But I dont see any tangible negative effects that this would have.

I think we can probably merge

stale