SPEC-3495: handle better all package name

Package could have -debug in their filename, but their service name is
without it.
Some package could exists with a basename-extension, so we need to grep
better to not catch them all.
Example: agl-service-bluetooth catch agl-service-bluetooth-map.

Change-Id: Ibc750e7893a8cbe3fc22a0d8f13a32c28a898bd1
Bug-AGL: SPEC-3495
Signed-off-by: Corentin LABBE <clabbe@baylibre.com>