api samples: Update samples to 1.15.0-rc

taskqueue-cmdline-sample/pom.xml

 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.google</groupId>
     <artifactId>google</artifactId>
     <version>5</version>
   </parent>
   <groupId>com.google.apis-samples</groupId>
   <artifactId>taskqueue-cmdline-sample</artifactId>
@@ skipping 26 matching lines @@
       <email>vibhooti@google.com</email>
       <organization>Google</organization>
       <organizationUrl>http://www.google.com</organizationUrl>
       <roles>
         <role>owner</role>
         <role>developer</role>
       </roles>
       <timezone>-5</timezone>
     </developer>
   </developers>
+
   <build>
     <plugins>
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
         <version>2.3.2</version>
         <configuration>
           <source>1.6</source>
           <target>1.6</target>
         </configuration>
       </plugin>
@@ skipping 49 matching lines @@
           </execution>
         </executions>
       </plugin>
     </plugins>
     <finalName>${project.artifactId}-${project.version}</finalName>
   </build>
   <dependencies>
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-taskqueue</artifactId>
-      <version>v1beta2-rev9-1.14.1-beta</version>
+      <version>v1beta2-rev13-1.15.0-rc</version>
     </dependency>
     <dependency>
       <groupId>com.google.http-client</groupId>
       <artifactId>google-http-client-jackson2</artifactId>
       <version>${project.http.version}</version>
     </dependency>
     <dependency>
       <groupId>com.google.oauth-client</groupId>
       <artifactId>google-oauth-client-jetty</artifactId>
       <version>${project.oauth.version}</version>
     </dependency>
   </dependencies>
   <properties>
-    <project.http.version>1.14.1-beta</project.http.version>
-    <project.oauth.version>1.14.1-beta</project.oauth.version>
+    <project.http.version>1.15.0-rc</project.http.version>
+    <project.oauth.version>1.15.0-rc</project.oauth.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 </project>