Fix variable definition in wrong scope

File "/usr/lib/python2.7/dist-packages/salt/states/pkg.py", line 702
UnboundLocalError: local variable 'modified_hold' referenced before assignment
added runner pillar.show_pillar
Update pillar.py

PEP8 W391: blank line at end of file
PEP8 E711: comparison to None ...
PEP8 E302: expected 2 blank lines, found 0
Allow {set,get,del}_tags to work on all resources
Clarify docstrings for {get,del}_tags
Update AWS docs for new tagging functionality
Merge pull request #12037 from techhat/issue12002

Allow {set,get,del}_tags to work on all resources
Merge pull request #12004 from ticosax/fix-variable-scope

Fix variable definition in wrong scope
Merge pull request #12005 from st0ne-dot-at/pillar_show

added runner pillar.show_pillar
Since docker is using multiple driver extend its attach support.

Add support for attaching processes to a container driven by libcontainer.
lxc is still supported.