* feat(config):read config/defaults with authentication
This change allows to use defaults and config files from a protected GitHub repository.
The options `--customConfig` and `--defaultConfig` already allowed to provide a link to an uprotected file.
Now, by passing a value in the form `<hostname>:<token>` to parameter `gitHubTokens` (this parameter can be passed multiple times) a token can be provided for dedicated hosts.
This makes it possible to use a link like
`https://api.github.com/repos/SAP/jenkins-library/contents/resources/my-defaults.yml?ref=master`
as reference to a default file or similarly as reference to a configuration file.
* update generation to allow protected config/defaults
* fix CodeClimate issues
* update missing generations
