[FLINK-3832][build][WIP] POM Cleanup flink-streaming-scala

[yew1eb]

What is the purpose of the change

This PR changes the flink-streaming-scala pom to

• not contain unused dependencies
• contain all used dependencies

Brief change log

Verifying this change

mvn dependency:analyze

[INFO] --- maven-dependency-plugin:2.10:analyze (default-cli) @ flink-streaming-scala_2.11 ---
[WARNING] Used undeclared dependencies found:
[WARNING]    org.apache.flink:flink-core:jar:1.4-SNAPSHOT:compile
[WARNING]    com.esotericsoftware.kryo:kryo:jar:2.24.0:compile
[WARNING]    org.apache.flink:flink-test-utils-junit:jar:1.4-SNAPSHOT:test
[WARNING]    org.apache.flink:flink-annotations:jar:1.4-SNAPSHOT:compile
[WARNING]    org.apache.flink:flink-runtime_2.11:jar:1.4-SNAPSHOT:compile
[WARNING]    org.apache.flink:flink-java:jar:1.4-SNAPSHOT:compile
[WARNING] Unused declared dependencies found:
[WARNING]    org.hamcrest:hamcrest-all:jar:1.3:test
[WARNING]    org.apache.flink:force-shading:jar:1.4-SNAPSHOT:compile
[WARNING]    com.google.code.findbugs:jsr305:jar:1.3.9:compile
[WARNING]    log4j:log4j:jar:1.2.17:test
[WARNING]    org.powermock:powermock-api-mockito:jar:1.6.5:test
[WARNING]    org.slf4j:slf4j-log4j12:jar:1.7.7:test
[WARNING]    org.scala-lang:scala-compiler:jar:2.11.11:compile
[WARNING]    org.powermock:powermock-module-junit4:jar:1.6.5:test
[WARNING]    org.mockito:mockito-all:jar:1.10.19:test
[WARNING]    org.scala-lang:scala-reflect:jar:2.11.11:compile
[WARNING]    org.slf4j:slf4j-api:jar:1.7.7:compile
[WARNING]    org.apache.flink:flink-runtime_2.11:test-jar:tests:1.4-SNAPSHOT:test

After the change:

[INFO] --- maven-dependency-plugin:2.10:analyze (default-cli) @ flink-streaming-scala_2.11 ---
[WARNING] Unused declared dependencies found:
[WARNING]    org.hamcrest:hamcrest-all:jar:1.3:test
[WARNING]    org.apache.flink:force-shading:jar:1.4-SNAPSHOT:compile
[WARNING]    org.powermock:powermock-module-junit4:jar:1.6.5:test
[WARNING]    com.google.code.findbugs:jsr305:jar:1.3.9:compile
[WARNING]    log4j:log4j:jar:1.2.17:test
[WARNING]    org.mockito:mockito-all:jar:1.10.19:test
[WARNING]    org.powermock:powermock-api-mockito:jar:1.6.5:test
[WARNING]    org.slf4j:slf4j-api:jar:1.7.7:compile
[WARNING]    org.slf4j:slf4j-log4j12:jar:1.7.7:test

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (yes)

Documentation

none

[zentol]

We will have to redo this from scratch since too much time has passed.