ansible-101: use only yaml module in course

[ioggstream]

• use only yaml module (it's a json superset)

• show safe_dump

• show ipython_cat.s

data= !cat /tmp/foo/localhost

import yaml

data_structure = yaml.load(data.s)

ansible_mounts = data_structure['ansible_facts']['ansible_mounts']

yaml_string = yaml.safe_dump(ansible_mounts, default_flow_style=0)

print(yaml_string)