ros-kinetic-mavros installation on RPi 3

edit

apt-get source finds the mavros package

`apt-get source ros-kinetic-mavros
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Need to get 146 kB of source archives.
Get:1 http://packages.ros.org/ros/ubuntu/ jessie/main ros-kinetic-mavros 0.18.7-0jessie (dsc) [1,433 B]
Get:2 http://packages.ros.org/ros/ubuntu/ jessie/main ros-kinetic-mavros 0.18.7-0jessie (tar) [123 kB]
Get:3 http://packages.ros.org/ros/ubuntu/ jessie/main ros-kinetic-mavros 0.18.7-0jessie (diff) [20.8 kB]
Fetched 146 kB in 0s (170 kB/s)              
dpkg-source: warning: extracting unsigned source package (ros-kinetic-mavros_0.18.7-0jessie.dsc)
dpkg-source: info: extracting ros-kinetic-mavros in ros-kinetic-mavros-0.18.7
dpkg-source: info: unpacking ros-kinetic-mavros_0.18.7.orig.tar.gz
dpkg-source: info: unpacking ros-kinetic-mavros_0.18.7-0jessie.debian.tar.xz

but apt-get install gives error.

sudo apt-get install ros-kinetic-mavros
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package ros-kinetic-mavros