SGF-392 - Add support for OQL Query statement extensions in Repository Query methods via Annotations.

Adding integration tests to test the use of the custom OQL Query Annotation extensions in Repository Query methods against GemFire's actual OQL Query engine.
(cherry picked from commit bdbf101fd7f3e920f28634bb24cd0667855fa1e2)

Signed-off-by: John Blum <jblum@pivotal.io>

src/test/resources/org/springframework/data/gemfire/repository/sample/UsingQueryAnnotationExtensionsInUserRepositoryIntegrationTest-context.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+	   xmlns:gfe="http://www.springframework.org/schema/gemfire"
+	   xmlns:gfe-data="http://www.springframework.org/schema/data/gemfire"
+	   xmlns:repo="http://www.springframework.org/schema/data/repository"
+	   xmlns:util="http://www.springframework.org/schema/util"
+	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	   xsi:schemaLocation="
+        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
+        http://www.springframework.org/schema/gemfire http://www.springframework.org/schema/gemfire/spring-gemfire.xsd
+        http://www.springframework.org/schema/data/gemfire http://www.springframework.org/schema/data/gemfire/spring-data-gemfire.xsd
+		http://www.springframework.org/schema/data/repository http://www.springframework.org/schema/data/repository/spring-repository.xsd
+        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd
+">
+
+	<util:properties id="gemfireProperties">
+		<prop key="name">UsingQueryAnnotationExtensionsInUserRepositoryIntegrationTest</prop>
+		<prop key="mcast-port">0</prop>
+		<prop key="log-level">config</prop>
+	</util:properties>
+
+	<gfe:cache properties-ref="gemfireProperties"/>
+
+	<gfe:replicated-region id="Users" persistent="false"/>
+
+	<gfe:index id="UsernameIdx" expression="username" from="/Users" type="PRIMARY_KEY"/>
+
+	<gfe-data:repositories base-package="org.springframework.data.gemfire.repository.sample">
+		<repo:include-filter type="assignable" expression="org.springframework.data.gemfire.repository.sample.UsingQueryAnnotationExtensionsInUserRepository"/>
+	</gfe-data:repositories>
+
+</beans>