fix apparmor

Signed-off-by: Jess Frazelle <acidburn@microsoft.com>

.travis.yml

@@ -7,6 +7,8 @@ go:
 before_install:
   - go get github.com/golang/lint/golint
   - go get honnef.co/go/tools/cmd/staticcheck
+  - echo "deb http://archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse" | sudo tee /etc/apt/sources.list.d/backports.list
+  - sudo apt update && sudo apt install -y -t trusty-backports libapparmor-dev libseccomp-dev
 jobs:
   include:
     - script: make everything