update-rc: Stop and remove service if updating package
Since when updating packages packages managers do not remove the previous package,
it just replaces new files and run pre/post install scripts. This causes not
to update update-rc scripts if they were changed.
This patch is useful in case the newer package version updated the update-rc
script.
Signed-off-by: Felipe F. Tonello <eu@felipetonello.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>