[JENKINS-13659] back to guava 11.0.1.

pom.xml

@@ -195,7 +195,7 @@ THE SOFTWARE.
       <dependency>
         <groupId>com.google.guava</groupId>
         <artifactId>guava</artifactId>
-        <version>12.0-rc1</version>
+        <version>11.0.1</version>
       </dependency>
       
       <dependency>