Fix koan's get_insert_script()

See https://bugzilla.redhat.com/show_bug.cgi?id=1047350
Merge pull request #866 from opoplawski/koan-bug1047350

Fix koan's get_insert_script()
PEP8 - cobbler/action_buildiso.py
Merge pull request #870 from jmaas/master

PEP8 - cobbler/action_buildiso.py
PEP8 - cobbler/kickgen.py
Merge pull request #871 from jmaas/master

PEP8 - cobbler/kickgen.py
PEP8 - cobbler/action_sync.py
Merge pull request #872 from jmaas/master

PEP8 - cobbler/action_sync.py
PEP8 - cobbler/configgen.py
Merge pull request #873 from jmaas/master

PEP8 - cobbler/configgen.py
PEP8 - cobbler/item_distro.py
Merge pull request #874 from jmaas/master

PEP8 - cobbler/item_distro.py
PEP8 - cobbler/item.py
Merge pull request #875 from jmaas/master

PEP8 - cobbler/item.py
PEP8 - cobbler/cexceptions.py
Merge pull request #876 from jmaas/master

PEP8 - cobbler/cexceptions.py
PEP8 - cobbler/collection_files.py
PEP8 - cobbler/collection_mgmtclasses.py
PEP8 - cobbler/collection_packages.py
PEP8 - cobbler/collection_profiles.py