add test-scoped dep in test module

Author: diegomarquezp

google-http-client-test/pom.xml

@@ -59,6 +59,12 @@
     <dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.google.guava</groupId>
+      <artifactId>guava</artifactId>
+      <scope>test</scope>
     </dependency>
   </dependencies>