UBUNTU: d/s/m/insert-ubuntu-changes: <stop at> should not be included in the changelog

UBUNTU: d/s/m/insert-ubuntu-changes: <stop at> should not be included in the changelog

Ignore: yes

Commit "UBUNTU: d/s/m/insert-ubuntu-changes: use full version numbers"
wrongly change the behaviour of the "<stop at>" parameter.

Change the script to not include the <stop at> version into the target
changelog.

Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
Acked-by: Kamal Mostafa <kamal@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>