2. Move the config loading functions to where they are used (in stages)
3. Adjust cc_set_passwords to use the is_true and is_false renamed functions
4. Adjust the init stage to have a _read_base_config function used to load
the base 'initial' configuration from the following locations
a. Kernel cmdline
b. Conf.d location (+ the cloud.cfg location)
c. Built-in configuration