sovle jar conflict， remove servlet-api 2.5 jar

dolphinscheduler-api/pom.xml

@@ -146,6 +146,12 @@
     <dependency>
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-common</artifactId>
+      <exclusions>
+        <exclusion>
+          <groupId>javax.servlet</groupId>
+          <artifactId>servlet-api</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
 
     <dependency>
@@ -156,11 +162,23 @@
     <dependency>
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-hdfs</artifactId>
+      <exclusions>
+        <exclusion>
+          <artifactId>servlet-api</artifactId>
+          <groupId>javax.servlet</groupId>
+        </exclusion>
+      </exclusions>
     </dependency>
 
     <dependency>
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-yarn-common</artifactId>
+      <exclusions>
+        <exclusion>
+          <artifactId>servlet-api</artifactId>
+          <groupId>javax.servlet</groupId>
+        </exclusion>
+      </exclusions>
     </dependency>
 
     <dependency>
@@ -168,14 +186,20 @@
       <artifactId>hadoop-aws</artifactId>
     </dependency>
 
-    <dependency>
+   <!-- <dependency>
       <groupId>javax.servlet</groupId>
       <artifactId>servlet-api</artifactId>
-    </dependency>
+    </dependency>-->
 
     <dependency>
       <groupId>org.mortbay.jetty</groupId>
       <artifactId>jsp-2.1</artifactId>
+      <exclusions>
+        <exclusion>
+          <artifactId>jsp-api-2.1</artifactId>
+          <groupId>org.mortbay.jetty</groupId>
+        </exclusion>
+      </exclusions>
     </dependency>
 
     <!-- just for test -->

dolphinscheduler-common/pom.xml

@@ -246,11 +246,6 @@
 			</exclusions>
 		</dependency>
 
-		<dependency>
-			<groupId>javax.servlet</groupId>
-			<artifactId>javax.servlet-api</artifactId>
-		</dependency>
-
 		<dependency>
 			<groupId>org.apache.hadoop</groupId>
 			<artifactId>hadoop-hdfs</artifactId>