* Update task definitions for network_cli
* Add connection to debug messages
* Specify connection for prepare task
* pc won't be around for connection=network_cli
* Assorted Python 3 fixes
* Give default port if ansible_ssh_port missing
* delegate -> connection
* Extend error regex
This change corrects problems reported by the `yamllint` linter.
Since key duplication problems were removed in 4d48711, this commit
mainly fixes trailing spaces and extra empty lines at beginning/end of
files.