Only run tests optionally

src/freedombone-addremove

     install_apps interactive
 }
 
-${PROJECT_NAME}-tests
-if [ ! "$?" = "0" ]; then
-    exit 2
+if [[ $1 == "test"* ]]; then
+    ${PROJECT_NAME}-tests
+    if [ ! "$?" = "0" ]; then
+        exit 2
+    fi
 fi
 
 detect_installable_apps