PEP8 fixes (make qa)

web/cobbler_web/views.py:1133:12: E713 test for membership should be 'not in'
web/cobbler_web/views.py:1239:22: E711 comparison to None should be 'if cond is not None:'
web/cobbler_web/views.py:1077:17: E711 comparison to None should be 'if cond is not None:'
web/cobbler_web/views.py:1089:8: E714 test for object identity should be 'is not'
bin/services.py:107:2: E111 indentation is not a multiple of four
bin/cobblerd:61:9: E128 continuation line under-indented for visual indent
bin/cobblerd:63:9: E128 continuation line under-indented for visual indent
bin/cobblerd:65:9: E128 continuation line under-indented for visual indent
bin/cobblerd:67:9: E128 continuation line under-indented for visual indent
cobbler/api.py:127:90: E502 the backslash is redundant between brackets
cobbler/api.py:128:57: E502 the backslash is redundant between brackets
cobbler/action_sync.py:188:20: E713 test for membership should be 'not in'