EM does not handle dependency management

Steps to reproduce:

• You have an extension A, with:

  <dependencyManagement>
      <dependencies>
        <dependency>
          <groupId>someGroup</groupId>
          <artifactId>extensionB</artifactId>
          <version>2.0</version>
        </dependency>
      <dependencies>
  </dependencyManagement>
  

• Extension A have also a dependency to extension C.
• Extension C have a dependency to extension B, version 1.0.

In EM, you try to install Extension A. Then, it tries to install extension B with version 1.0 instead of version 2.0.

Note: the dependency management is actually defined in a parent of extension A.