samples/simple-launchpad: fix build
samples/simple-launchpad: fix build

Reference the released 7 launchpad instead of 7-SNAPSHOT

git-svn-id: 6eed74fe9a15c8da84b9a8d7f2960c0406113ece@1764324 13f79535-47bb-0310-9956-ffa450edef68

anchela/sling,vladbailescu/sling,vladbailescu/sling,ist-dresden/sling,JEBailey/sling,awadheshv/sling,ieb/sling,roele/sling,mikibrv/sling,JEBailey/sling,trekawek/sling,labertasch/sling,roele/sling,tmaret/sling,roele/sling,awadheshv/sling,ieb/sling,awadheshv/sling,labertasch/sling,mcdan/sling,ist-dresden/sling,JEBailey/sling,ieb/sling,headwirecom/sling,mikibrv/sling,trekawek/sling,labertasch/sling,awadheshv/sling,cleliameneghin/sling,headwirecom/sling,vladbailescu/sling,tmaret/sling,mikibrv/sling,tmaret/sling,mikibrv/sling,tmaret/sling,ist-dresden/sling,vladbailescu/sling,headwirecom/sling,roele/sling,ieb/sling,ieb/sling,cleliameneghin/sling,anchela/sling,anchela/sling,mikibrv/sling,cleliameneghin/sling,mcdan/sling,ieb/sling,labertasch/sling,trekawek/sling,anchela/sling,tmaret/sling,awadheshv/sling,ist-dresden/sling,mcdan/sling,cleliameneghin/sling,awadheshv/sling,trekawek/sling,trekawek/sling,roele/sling,vladbailescu/sling,headwirecom/sling,mcdan/sling,JEBailey/sling,trekawek/sling,mcdan/sling,JEBailey/sling,headwirecom/sling,labertasch/sling,ist-dresden/sling,mcdan/sling,cleliameneghin/sling,mikibrv/sling,anchela/sling