Bug 1513330 - Add nasm to debian7-amd64-build-base. r=firefox-build-system-reviewers,mshal

Differential Revision: https://phabricator.services.mozilla.com/D14181

--HG--
extra : moz-landing-system : lando

taskcluster/ci/docker-image/kind.yml

@@ -50,6 +50,7 @@ jobs:
     parent: debian7-base
     definition: debian7-build
     packages:
+      - deb7-nasm
       - deb7-valgrind
     args:
       ARCH: amd64