Move some files around to prepare for additional functionality

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Switch to testsigning

The build should not rely on the Citrix codesigning certificate so
add a test certificate to the repo and use that.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Fix initial install

The co-installer was being defeated by a lack of service key. This is of
course completely normal for the initial install.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>