Merge branch 'seed' into lxc
Merge remote-tracking branch 'origin/develop' into lxc
add saltify to salt.modules.lxc
fix grammar in some lxc mod err msgs: exists -> exist
avoid shadowing outer exists() func in lxc module

************* Module salt.modules.lxc
salt/modules/lxc.py:520: [W0621(redefined-outer-name), start] Redefining name 'exists' from outer scope (line 616)
salt/modules/lxc.py:555: [W0621(redefined-outer-name), stop] Redefining name 'exists' from outer scope (line 616)
avoid shadowing templates() within lxc module

************* Module salt.modules.lxc
salt/modules/lxc.py:710: [W0621(redefined-outer-name), templates] Redefining name 'templates' from outer scope (line 700)
salt.modules.lxc: fix bug in saltify when container is not running
Merge branch 'develop' into with-pylint-pragmas
pkgrepo state: add missing import of `sys` module

************* Module salt.states.pkgrepo
salt/states/pkgrepo.py:303: [E0602(undefined-variable), managed] Undefined variable 'sys'
salt/states/pkgrepo.py:379: [E0602(undefined-variable), absent] Undefined variable 'sys'
legit ignorance
just uses inherited __init__()
Bump default gather_job_timeout to 5 for safety
Added docs for the extension_modules setting

Refs #11030
Merge pull request #11057 from hulu/lxc-exists

shadowing & grammar in lxc module
Merge pull request #11058 from hulu/lxc-templates

avoid shadowing templates() within lxc module
Merge pull request #11059 from mgwilliams/lxc

add lxc.saltify and lxc.run_cmd
Merge pull request #11060 from cvrebert/patch-1

pkgrepo state: add missing import of `sys` module
Merge pull request #11062 from basepi/gathertimeout

Bump default gather_job_timeout to 5 for safety
Merge pull request #11063 from whiteinge/doc-extension-modules

Added docs for the extension_modules setting
Various lint fixes