replaced deprecated --force-yes command

[matteobarbera]

Fix for Issue #2594

[gautierhattenberger]

It seems that the problem is coming from gazebo package from ROS. The version for 18.04 bionic have been update the Oct 3, 2020, but the reference to dependency packages seems to be broken (9.15.0-1~bionic replaced by 9.15.0-2~bionic). Maybe it will solve by itself when they fix the problem.
Or we could use the version from ubuntu which is much older (9.0.0+dfsg5-3ubuntu1). Is it problem ? Since it is only for compilation tests, maybe it is good enough.

[dewagter]

Since only for compilation tests, the old version is OK if it compiles.

[gautierhattenberger]

@matteobarbera can you try to update your PR without adding the ROS/Gazebo repository to the travis config ?

[matteobarbera]

@gautierhattenberger do you mean removing the Gazebo repository from the pre-install commands?

paparazzi/.travis.yml

Lines 10 to 11 in fab1253

	- sudo sh -c 'echo "deb http://packages.osrfoundation.org/gazebo/ubuntu-stable `lsb_release -cs` main" > /etc/apt/sources.list.d/gazebo-stable.list'
	- wget http://packages.osrfoundation.org/gazebo.key -O - | sudo apt-key add -

It seems that this is a recurring issue, and is being addressed gazebosim/gazebo-classic#2744 and gazebo-tooling/release-tools#307

[gautierhattenberger]

yes, remove the Gazebo repository, it should use the (old) version from ubuntu

[matteobarbera]

The Travis job log shows that the different Gazebo packages were taken from the much older Ubuntu versions as you expected
Get:101 http://archive.ubuntu.com/ubuntu bionic/universe amd64 gazebo9-common all 9.0.0+dfsg5-3ubuntu1 [34.4 MB]

[gautierhattenberger]

it seems fine to use old gazebo for compilation tests