Travis: Always work with latest PX4 param meta

.travis.yml

@@ -64,6 +64,7 @@ addons:
     - libsdl1.2-dev
     - libudev-dev
     - texlive-font-utils
+    - wget
 
 cache:
   directories:
@@ -141,6 +142,8 @@ before_script:
   - ln -s /usr/bin/ccache ~/bin/gcc
   - ln -s /usr/bin/ccache ~/bin/gcc-4.8
   - export PATH=~/bin:$PATH
+  - wget http://px4-travis.s3.amazonaws.com/Firmware/master/parameters.xml -O src/FirmwarePlugin/PX4/PX4ParameterFactMetaData.xml
+  - wget http://px4-travis.s3.amazonaws.com/Firmware/master/airframes.xml -O src/AutoPilotPlugins/PX4/AirframeFactMetaData.xml
   - if [[ "${TRAVIS_OS_NAME}" = "android" && "${CONFIG}" = "installer" && -z ${ANDROID_STOREPASS} ]]; then
         export CONFIG=release
         ;