Fix test dependencies

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

sentinel-core/pom.xml

@@ -16,6 +16,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
+            <scope>test</scope>
             <exclusions>
                 <exclusion>
                     <groupId>org.hamcrest</groupId>
@@ -30,22 +31,27 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.awaitility</groupId>
             <artifactId>awaitility</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.hamcrest</groupId>
             <artifactId>java-hamcrest</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.powermock</groupId>
             <artifactId>powermock-module-junit4</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.powermock</groupId>
             <artifactId>powermock-api-mockito2</artifactId>
+            <scope>test</scope>
         </dependency>
     </dependencies>
     <build>

sentinel-extension/sentinel-datasource-redis/pom.xml

@@ -34,10 +34,12 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.awaitility</groupId>
             <artifactId>awaitility</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>com.alibaba</groupId>

sentinel-extension/sentinel-datasource-zookeeper/pom.xml

@@ -46,10 +46,12 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.awaitility</groupId>
             <artifactId>awaitility</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.curator</groupId>