convert to Python urllib2 interface

define password manager for authentication
define str() method for Axis class for logging
remove unused getopt import
fix private parameter lookup bug
change node name to axis_driver
Search for driver parameters in containing namespaces.
add frame_id parameter, fixes #8
publish uncalibrated camera_info messages
resolve frame_id using tf_prefix
Merge pull request #7 from jack-oquin/master

Parameter handling fixes
launch file updates

move launch files to test subdirectory
fix axis.launch to support current driver parameters
add .gitignore
Add camera_info_manager support to Axis driver

Adds a new dependency on the camera_info_manager_py unary stack.
Provide a generic Axis camera default_calibration.yaml.
Add new camera_info_url parameter.
Rename test/ subdirectory to tests/.

fixes #4
Add teleop node for PTZ.
Add rudimentary teleop node, intended to accompany drive-base teleop systems.
Merging camera_info_manager support from @jack-oquin.
Added fps=0 in command line to force unlimited framerate
Added a TF publisher based on axis-published state
Added a twist command using the continuous move functionality, added the
corresponding teleop node
Added launch files to test the twist facility and the TF publisher
Corrected incorrect manifest
Merge pull request #11 from cedricpradalier/master

Twist input, TF publisher and associated helper files