Option to skip installing test dependencies of packages

[dirk-thomas]

Since for format 2 of the package.xml spec test dependencies must be considered it would be nice to optionally disable test dependencies.

[kmhallen]

It would be nice to optionally disable build and run dependencies as well.

[emersonknapp]

This feature would be useful as a general ability to enable/disable any class of package.xml dependencies. For example, you could run it against a ros2 install directory with only run_depend enabled, in order to get runtime dependencies on a system where you specifically don't want to install build tools.

[m2-farzan]

I think we can close this. The feature has been implemented in this PR: #789

[nuclearsandwich]

I think we can close this. The feature has been implemented in this PR: #789

Agreed.