Gazebo version collides between Indigo and Jade

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To finish installing ros-jade-desktop-full on Trusty, I had to uninstall Gazebo2 and install Gazebo5 related packages, which break many Indigo packages that transitively depend on Gazebo2 (via gazebo_ros etc.) I see at least 2 problems here:

• (As of now) there doesn't seem to be rosdep keys for ros-indigo-gazebo5* packages, which is suggested here. So I'm afraid changing dependencies in the package.xml files for the packages that depend on gazebo is not yet possible (e.g. I get $ rosdep install --from-paths src --ignore-src -r -y --> Cannot locate rosdep definition for [gazebo5_ros_control]).

• In the first place Indigo's official hosted Gazebo version is 2.x, based on which I bet there are projects that define the system requirement.

Is there any solution to keep me working on both ROS Indigo and Jade on the same OS, using both Gazebo2 and 5?