[issue-64] Rework specification of the dependency versions

This changes how we specify versions for dependencies, and plugins: - all versions are now
listed in `dependencyManagement` and `pluginManagement` sections in the
`mvn-defaults/pom.xml`.  Usage of dependencies and plugins should be done without explicit
`version` tag.

Also:

* unified discrepancies between versions of plugins and dependencies
* bumped versions for commons-codec, commons-csv, commons-compress, docker-java

this fixes #64

engine-docs/pom.xml

@@ -14,7 +14,6 @@
   <description>CLI for nosqlbench.</description>
 
   <properties>
-    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <javadoc.name>nosqlbench Docs</javadoc.name>
   </properties>
 
@@ -53,7 +52,6 @@
         <plugins>
           <plugin>
             <artifactId>maven-shade-plugin</artifactId>
-            <version>3.2.0</version>
             <configuration>
               <transformers combine.children="append">
                 <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">