make qa (pep8) fixes for cobbler/remote.py

cobbler/remote.py:65:4: E121 continuation line under-indented for hanging indent
cobbler/remote.py:248:25: E128 continuation line under-indented for visual indent
cobbler/remote.py:251:25: E128 continuation line under-indented for visual indent
cobbler/remote.py:401:12: E713 test for membership should be 'not in'
cobbler/remote.py:517:9: E124 closing bracket does not match visual indentation
cobbler/remote.py:880:19: E711 comparison to None should be 'if cond is None:'
cobbler/remote.py:944:35: E713 test for membership should be 'not in'
cobbler/remote.py:1001:20: E713 test for membership should be 'not in'
cobbler/remote.py:1301:16: E711 comparison to None should be 'if cond is None:'
cobbler/remote.py:1328:16: E711 comparison to None should be 'if cond is None:'
cobbler/remote.py:1353:9: E265 block comment should start with '# '
cobbler/remote.py:1381:17: E265 block comment should start with '# '
cobbler/remote.py:1392:13: E265 block comment should start with '# '
cobbler/remote.py:1401:21: E265 block comment should start with '# '