Convert SRP pipelined results to correct data type

DATAREDIS-200

- Convert return of closePipeline() to same types
returned from individual operations

- Change SRP execute to return Reply.data() 
instead of Reply for consistency with pipeline

src/test/resources/org/springframework/data/redis/connection/srp/SrpConnectionIntegrationTests-context.xml

@@ -13,6 +13,7 @@
 			<bean class="org.springframework.data.redis.SettingsUtils"
 				factory-method="getPort" />
 		</property>
+		<property name="convertPipelineResults" value="false"/>
 	</bean>
 
 </beans>