Fix typo

Update for 2.1.0 final packaging

Fix walkthrough test path

Mininet 2.1.0rc1

pass code check

test_hifi: Fix occasional test breakage

Source of error: regex to parse ps output had a single space, rather
than handling any amount of whitespace before the CPU percentage.  When
that percentage would drop below 10.0, an space would be printed,
confusing the regex.

Fixed by handling arbitrary whitespace before the percentage.

Fix whitespace and change no controller exception to warning.

Removed redundant debian/mininet.manpages

Change version to 2.0.0d2 - there has to be a better way.