fix spelling
include_config -> configuration, to avoid shadowing same-named func
Merge pull request #5111 from hulu/config-shadowing

include_config -> configuration, to avoid shadowing same-named func
Merge pull request #5107 from cvrebert/patch-4

fix spelling
fix pylint W1401 (Anomalous backslash in string) problems in grains.core
Merge pull request #5116 from hulu/grains-backslashes

fix pylint W1401 (Anomalous backslash in string) problems in grains.core