$ apt-cache show ros-kinetic-flir-camera-driver
Package: ros-kinetic-flir-camera-driver
Version: 0.1.3-0xenial-20190611-170844-0800
Architecture: amd64
Maintainer: Michael Hosmar <mhosmar@clearpathrobotics.com>
Installed-Size: 13
Depends: ros-kinetic-spinnaker-camera-driver
Priority: extra
Section: misc
Filename: pool/main/r/ros-kinetic-flir-camera-driver/ros-kinetic-flir-camera-driver_0.1.3-0xenial-20190611-170844-0800_amd64.deb
Size: 1614
SHA256: d7e7d9e37763881eaef742011b2bfe06d87ba9a3156b249df38b31d6d80bc2f1
SHA1: 51aaaff73660cc61701ec46b428e278000673ad3
MD5sum: 1e123e25e615eb07114fc06b1ccaa264
Description: A set of drivers for Flir cameras based on the Spinnaker SDK.
Description-md5: 496d4a2ccda1ea660050d4747c3aecb2
Checking packages.ros.org under Xenial Packages list (http://packages.ros.org/ros/ubuntu/dists/xenial/main/binary-amd64/Packages) shows that, while the dependency is captures on ros-kinetic-flir-camera-driver needing ros-kinetic-spinnaker-camera-driver, the actual driver is not listed as available in the packages!
On Ubuntu 16.04 LTS using ROS Kinetic repos, it looks like the ros-kinetic-spinnaker-camera-driver package is gone (http://packages.ros.org/ros/ubuntu/dists/xenial/main/binary-amd64/Packages)
Checking deps on flir-camera-driver:
Checking packages.ros.org under Xenial Packages list (http://packages.ros.org/ros/ubuntu/dists/xenial/main/binary-amd64/Packages) shows that, while the dependency is captures on ros-kinetic-flir-camera-driver needing ros-kinetic-spinnaker-camera-driver, the actual driver is not listed as available in the packages!