Fix ipv6 integration spec: single-quote pathname which can have spaces.
Fix some client integrations with path quoting.
More single quotes around a command path.
More single quotes for command path.
Gross hack: silence the mysterious post-test cleanup error while we investigate.
Remove unnecessarily added blank line.
Merge pull request #2059 from opscode/fix-integrations

Fix a bunch of integration tests so they pass on Windows--almost all adding single quotes around paths with spaces.