Add spaces before suffixes so build steps don't get too fat.
Add spaces before suffixes so build steps don't get too fat.

When build steps are long, they can't wrap, so they look a
little strange on the waterfall. Adding a space makes the
build steps look nicer.

TEST=Unit tests, pylint.
BUG=none

Change-Id: I1b0fd7492b4ebb564901dcc13a49bfb2cee2480d
Reviewed-on: https://gerrit.chromium.org/gerrit/15049
Reviewed-by: Chris Sosa <959d3d631fb6f17f1b07f751372041a1edb210d1@chromium.org>
Tested-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Commit-Ready: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>

zhang0137/chromite,chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite,coreos/chromite,zhang0137/chromite,chadversary/chromiumos.chromite,zhang0137/chromite,bpsinc-native/src_third_party_chromite,coreos/chromite,bpsinc-native/src_third_party_chromite,coreos/chromite