[KARAF-2547] Improve stop script with exit code and better messages
[KARAF-2547] Improve stop script with exit code and better messages

git-svn-id: 71d8a689455c5fbb0f077bc40adcfc391e14cb9d@1539271 13f79535-47bb-0310-9956-ffa450edef68

grgrzybek/karaf,grgrzybek/karaf,grgrzybek/karaf