"using salt at scale" tutorial for the docs
url test
url test2
link test2
added links to two auth-loop issues
put infos into a note box
highlight topics
remove all you's and rewrite some sentences
remove all you's and rewrite some sentences
Merge branch 'salt_at_scale_doc' of https://github.com/felskrone/salt into salt_at_scale_doc

Conflicts:
	doc/topics/tutorials/intro_scale.rst
fix link
rewrite a few sentences, re-ordering, etc.
Refactor state module to reduce duplication
Bad args fix
Add try..except check for JSON errors to sls shim

This is the same fix as in #13557 for highstate.
We must be able to count on __salt__ being a dictionary-like object

This fix is far from complete. FunctionWrapper in it's current form is
missing ``in`` support, ``.keys()`` support, ``.update()`` support,
maybe more.
fixes for nova, porting fixes from the openstack driver
added availability_zones to nova cloud
removed some debugging code accidentally commited earlier
Check and fix wrong x509 version field.

This fixes #11653.