Fix the documentation booleans so they use "yes" and "no"

Both modules seboolean and zfs have not been adapted since they defer from the default (either by having a 'null' or special state, or prefering "on"/"off" for state indication.
Merge pull request #2373 from dagwieers/doc-boolean

Fix the documentation booleans so they use "yes" and "no"
Use login_host for import and dump operations
typo in playbooks2.rst
Rephrased an awkward sentence.
Dont exit in FreeBSD/NetBSD subclass in check mode

* As the FIXMEs note: only exit if enable state is going to change.
* This is already handled in service_enable_rcconf() being called by both subclasses.
Merge pull request #2378 from eest/service_bsd_check

Dont exit in FreeBSD/NetBSD subclass in check mode
Merge pull request #2377 from dorfsmay/20130312-typo

20130312 typo
Merge pull request #2376 from peterjanes/devel

Use login_host for import and dump operations
Fixes #2380 - argument checking in file accepts chained arguments from copy