We're being too strict - there is a third possibility, which is that a
user will have defined the OS_* environment variables and expect them to
pass through.

Documentation update; Add advice about using unpatched Windows Management Framework 3.0.

Hopefully this should reduce bug reports like #10878 and #10825

Ansible inventory

Support for ANSIBLE_HOSTS is faded out, see commit
c7325454, therefore do not mention it in
the man pages.

Add become docs to the intro configuration for #10881

add azure integration tests

now properly inherit data from ansible.cfg for sudo/su ask pass

fixes #10891

cloudstack: integration tests

clarify role spec, dependencies and galaxy involvment.

cloudstack: add dynamic inventory

cloudstack: extend and fix cloudstack utils

Add lineinfile integration tests for quoted string