Add key for pip package cppcheck-junit (ros#15420)

* Add key for pip package cppcheck-junit

Fix order of added key and add debian version. Also put pip in name of key

Fix spaces at end of line.

Reorder cppcheck platforms to be alphabetical

* trailing whitespace fixup

rosdep/python.yaml

@@ -8,6 +8,13 @@ adafruit-pca9685-pip:
  ubuntu:
  pip:
  packages: [adafruit-pca9685]
+cppcheck-junit-pip:
+ debian:
+ pip:
+ packages: [cppcheck-junit]
+ ubuntu:
+ pip:
+ packages: [cppcheck-junit]
 ds4drv-pip:
  ubuntu:
  pip: