licensing: escape characters in stock licenses for HTML generation
licensing: escape characters in stock licenses for HTML generation

This changes fixes HTML escaping for stock linceses.

BUG=chromium:317103
TEST=local license.py run

Change-Id: I952e4085ec6930a4fa21b1a7a98752e85207d5e9
Reviewed-on: https://chromium-review.googlesource.com/176962
Reviewed-by: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@chromium.org>
Tested-by: Yu-Ju Hong <52dc720c411f8e2156e608c1a8b894a917489667@chromium.org>

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