verify: avoid tabs in check-system-info
verify: avoid tabs in check-system-info

pycodestyle has a longstanding bug/limitation whereby tabs inside of
triple-quote strings are counted as W191 ("indentation contains tabs").

  https://github.com/PyCQA/pycodestyle/issues/45

Strictly speaking, that's not a violation of PEP8, but as several
commentators note, using tabs inside of string literals means that, if
your editor doesn't show the distinction, it might not be clear what the
intent is.

Let's avoid both problems and use \t instead.

mvollmer/cockpit,garrett/cockpit,mvollmer/cockpit,garrett/cockpit,garrett/cockpit,mvollmer/cockpit,mvollmer/cockpit,cockpit-project/cockpit,garrett/cockpit,cockpit-project/cockpit,mvollmer/cockpit,martinpitt/cockpit,martinpitt/cockpit,martinpitt/cockpit,martinpitt/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,garrett/cockpit,martinpitt/cockpit,cockpit-project/cockpit