Add a full integration test of the key proxy

4 jobs for master in 8 minutes and 18 seconds
Status Job ID Name Coverage
  Build Pkgsrc
passed #7258
build_pkgsrc:stretch

00:00:20

 
  Build Pkg
passed #7259
amd64
build_pkg:stretch:amd64

00:01:10

passed #7260
arm64
build_pkg:stretch:arm64

00:06:45

 
  Upload Pkg
passed #7261
upload_pkg

00:01:13