{foxy} Sync to files/foxy/generated/cache.yaml as of 20201105055614

Regenerate with superflore modified to better parse the license values
as implemented in:
ros-infrastructure/superflore#279

Recipes generated by superflore for all packages in ROS distribution foxy.

This pull request was generated by running the following command:

superflore-gen-oe-recipes --dry-run --no-branch --ros-distro foxy --output-repository-path . --upstream-branch HEAD

meta-ros2-foxy/conf/ros-distro/include/foxy/generated/superflore-datetime.inc

@@ -0,0 +1,9 @@
+# foxy/generated/superflore-datetime.inc
+# Generated by superflore -- DO NOT EDIT
+#
+# Copyright Open Source Robotics Foundation
+
+
+# The time, in UTC, associated with the last superflore run that resulted in a change to the generated files. The date portion is
+# used as the third version field of ROS_DISTRO_METADATA_VERSION prior to the first release of a ROS_DISTRO.
+ROS_SUPERFLORE_GENERATION_DATETIME = "20201105055614"