add killport to install and manage scripts

manage.sh

@@ -70,7 +70,7 @@ elif [ "$1" == "connect-drone" ]; then
 elif [ "$1" == "disconnect-drone" ]; then
     wpa_supp_pid_file="$pids_dir/wpa_supp_pid.txt"
     if [ -f "$wpa_supp_pid_file" ]; then
-        pkill -P $(cat $wpa_supp_pid_file)
+        sudo pkill -P $(cat $wpa_supp_pid_file)
         echo "stopped drone connection via wpa_supp"
 	fi
 
@@ -134,6 +134,7 @@ elif [ "$1" == "stop-commander" ]; then
     commander_pid_file="$pids_dir/commander_pid.txt"
     if [ -f "$commander_pid_file" ]; then
         pkill -P $(cat $commander_pid_file)
+        sudo killport 8889
         echo "stopped commander"
 	fi