fuel.ignition.org to fuel.gazebosim.org

[woensug-choi]

As Ignition is now Gazebo (the name we all love). The models loading from Fuel Ignition (still old name) url is changed.
The models with loading from the Fuel Ignition, the cloud model library, need url changed.

This should fix #27 and #274

I will add some text in dave.doc for loading time (in my system, it took almost 5 minutes to download all models)

[mabelzhang]

Added to WG kanban https://github.com/orgs/ros-maritime/projects/1

[woensug-choi]

#274

If the issuer of abbove issue doesn't respond, and nobody at the community could review. I would just merge it. It's a no harm change. I will wait for two weeks max :)

[mabelzhang]

Hmm, I see that these are the new models we added in 2021. We have a copy of these on Fuel, those might need to be re-uploaded as well... If the URIs are actually pulling from Fuel and not the ones in this local repo, fixing the files in this repo wouldn't fix the error. But I see in the URI that the models on Fuel are all owned by different people... I don't think I can replace them. They would all have to be re-uploaded to a different account.

I haven't test it. Does this PR get rid of the errors for you?

If this PR doesn't fix the error, then maybe we should just refer to the local copies of the models and not use the ones on Fuel... until they can be re-uploaded. Ughhhh. But that's undoing all the uploading we did. And porting to new Gazebo actually works better with models on Fuel.

Sigh, the Ignition rename really sucks. We just had the same kind of error cropped up in the splash screen worlds in Harmonic today.

[woensug-choi]

Oh wow.. I haven't tested everything but the ones I've tested worked. This changes were first brought up after issues that the world was not launching. Modifying the URL as in this PR fixed it.

[woensug-choi]

@mabelzhang I shall be done with your review soon.. sorry. What do you think of publishing a new Release after this PR as it fixes the launch of world with new URL.

Added Uncommenting commit for joystick. This should be good to go.

[mabelzhang]

Oh I meant in the diff for examples/dave_demo_launch/launch/dave_integrated_demo.launch, there's still a lot of other commented tags. Do they all need to be commented? The joystick was just one of many.