Bael 766 flink (#1632)

* BAEL-756 code for flink article

* reorder

* simpler wordCount example

* BAEL-766 changes according to PR

* BAEL-766 change datasource to dataset

* BAEL-766 add sorting example

* BAEL-766 add simple streaming example

* one missing change to dataSet

* windowing example

* add window example

* add dependency explicitly

* add plugin

* add surefire plugin, change neme of the test to *IntegrationTest

* fluent assertions

libraries/pom.xml

@@ -152,6 +152,21 @@
             <artifactId>flink-test-utils_2.10</artifactId>
             <version>${flink.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.flink</groupId>
+            <artifactId>flink-core</artifactId>
+            <version>${flink.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.flink</groupId>
+            <artifactId>flink-java</artifactId>
+            <version>${flink.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.flink</groupId>
+            <artifactId>flink-test-utils_2.10</artifactId>
+            <version>${flink.version}</version>
+        </dependency>
     </dependencies>
 
     <properties>