Update format=cpe output to match consumer-side requirements.
Update format=cpe output to match consumer-side requirements.

This also adds sorting so that it's more deterministic and amenable
to diffing between runs.

BUG=none
TEST=cros_extract_deps --format=cpe --board=x86-generic chromeos

Change-Id: Ib5894c811c7747c53727fabd8086bfda13b720cd
Reviewed-on: https://gerrit.chromium.org/gerrit/61322
Tested-by: Jim Hebert <ba29f3d391c58b853c47a49b4da91f3ec0815c1c@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <bc323d654c912a6c99763475eeb77a04da410a4a@chromium.org>
Commit-Queue: Jim Hebert <ba29f3d391c58b853c47a49b4da91f3ec0815c1c@chromium.org>

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