Conf cleaning (#2327)

* [cleaning] remove PBN module
* [cleaning] remove ENOSE module
* [cleaning] update ENAC conf

* Cleaning on flight plans

* [cleaning] clean example and test conf

* add gazebo to the install step and compile example airframe

.travis.yml

@@ -7,9 +7,11 @@ compiler:
 before_install:
   - sudo add-apt-repository ppa:paparazzi-uav/ppa -y
   - sudo add-apt-repository ppa:team-gcc-arm-embedded/ppa -y
+  - 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 -
   - sudo apt-get update -q
 install:
-  - sudo apt-get install -y --force-yes paparazzi-dev paparazzi-jsbsim gcc-arm-embedded gcc-arm-linux-gnueabi libipc-run-perl rustc cargo
+  - sudo apt-get install -y --force-yes paparazzi-dev paparazzi-jsbsim gcc-arm-embedded gcc-arm-linux-gnueabi libipc-run-perl rustc cargo libgazebo7-dev
 script:
   - arm-none-eabi-gcc --version
   - if [ "${COVERITY_SCAN_BRANCH}" != 1 ]; then if [ "${TRAVIS_EVENT_TYPE}" == "cron" ]; then make test_all_confs; else make test; fi; fi