[ISSUE #646] Fix start script error, fix slf4j binder error (#647)

* [iot-bridge] Fix start script error, fix slf4j binder error

* update pom, use logback-classic dependency

Co-authored-by: zhangxu16 <zhangxu16@xiaomi.com>
diff --git a/rocketmq-iot-bridge/bin/server.sh b/rocketmq-iot-bridge/bin/server.sh
index aedf02b..4aa1e2c 100644
--- a/rocketmq-iot-bridge/bin/server.sh
+++ b/rocketmq-iot-bridge/bin/server.sh
@@ -22,13 +22,13 @@
 JAR=rocketmq-iot-bridge-${VERSION}.jar
 PID_FILE=${CURDIR}/.server.pid
 
-function _start() {
+_start() {
     java -cp ${BASEDIR}/target/${JAR} ${MAINCLASS} &
     echo $! > ${CURDIR}/.server.pid
     echo "RocketMQ-IoT-Bridge started ..."
 }
 
-function _stop() {
+_stop() {
     if [ ! -f ${PID_FILE} ]; then
         echo "RocketMQ-IoT-Bridge is not started!"
         exit 1
@@ -37,7 +37,7 @@
     rm ${PID_FILE}
 }
 
-function _restart() {
+_restart() {
     if [ -f ${PID_FILE} ]; then
         echo "Restart RocketMQ-IoT-Bridge"
         _stop
diff --git a/rocketmq-iot-bridge/pom.xml b/rocketmq-iot-bridge/pom.xml
index e9f0cf4..1acfa3e 100644
--- a/rocketmq-iot-bridge/pom.xml
+++ b/rocketmq-iot-bridge/pom.xml
@@ -64,6 +64,11 @@
             <artifactId>slf4j-api</artifactId>
             <version>1.7.7</version>
         </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <version>1.0.13</version>
+        </dependency>
     </dependencies>
 
     <properties>
@@ -138,9 +143,9 @@
                             <consoleOutput>true</consoleOutput>
                             <failsOnError>true</failsOnError>
                             <includeTestSourceDirectory>false</includeTestSourceDirectory>
-                            <exludes>
+                            <excludes>
                                 <exclude>**/org/apache/rocketmq/iot/example/**</exclude>
-                            </exludes>
+                            </excludes>
                         </configuration>
                         <goals>
                             <goal>check</goal>