avoid shadowing id() built-in func in dockerio module
update cron doc
salt-call now returns jobs to master

This is related to #10500.

This finishes @thatch45 work
lint fixes
Ensure the scope of the exec calls is limited for both globals & locals
Normalize case for functions vs classes, add mine shortcut
Update tests to use new syntax
Merge pull request #10626 from hulu/lint

minor linting in dockerio module
Merge pull request #10630 from borgstrom/pyobjects_security

Pyobjects security & convention
Merge pull request #10627 from makinacorpus/crondoc

update cron doc
Merge pull request #10629 from makinacorpus/saltcallreturn

salt-call now returns jobs to master
Add initial msgpack renderer
Add docstring to msgpack rednerer
More mac_user tests
fix win_file.append by importing errno
Basic support in packeting for segmentation and desegmentation
Now need to add to message transaction
fix win_file.append by importing errno
Added a test
Merge pull request #10631 from goldbach/issue10521

fix #10521 - missing namespaced functions
Merge pull request #10633 from goldbach/errnofix

fix win_file.append by importing errno