[FLINK-4306] [storm compatibility] Fix dependencies in flink-storm and flink-storm-examples

  - Flink dependencies are now 'provided'
  - flink-storm-examples has no direct storm-core dependency, but only depends through flink-storm

flink-contrib/flink-storm-examples/pom.xml

@@ -34,6 +34,18 @@ under the License.
 
 	<packaging>jar</packaging>
 
+
+	<repositories>
+		<!-- This repository is needed as a stable source for some Clojure libraries -->
+		<repository>
+			<id>clojars</id>
+			<url>https://clojars.org/repo/</url>
+			<releases><enabled>true</enabled></releases>
+			<snapshots><enabled>false</enabled></snapshots>
+		</repository>
+	</repositories>
+
+	
 	<dependencies>
 
 		<!-- core dependencies -->
@@ -44,6 +56,12 @@ under the License.
 			<version>${project.version}</version>
 		</dependency>
 
+		<dependency>
+			<groupId>org.apache.flink</groupId>
+			<artifactId>flink-streaming-java_2.10</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+
 		<dependency>
 			<groupId>org.apache.flink</groupId>
 			<artifactId>flink-examples-batch_2.10</artifactId>
@@ -54,6 +72,15 @@ under the License.
 			<groupId>org.apache.storm</groupId>
 			<artifactId>storm-starter</artifactId>
 			<version>0.9.4</version>
+			
+			<!-- remove storm dependency - it should be drawn only (with proper
+				customization) via the 'flink-storm' dependency -->
+			<exclusions>
+				<exclusion>
+					<groupId>org.apache.storm</groupId>
+					<artifactId>storm-core</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 
 		<!-- test dependencies -->

flink-contrib/flink-storm/pom.xml

@@ -34,7 +34,9 @@ under the License.
 
 	<packaging>jar</packaging>
 
+
 	<repositories>
+		<!-- This repository is needed as a stable source for some Clojure libraries -->
 		<repository>
 			<id>clojars</id>
 			<url>https://clojars.org/repo/</url>
@@ -43,23 +45,29 @@ under the License.
 		</repository>
 	</repositories>
 
+
 	<dependencies>
 
 		<!-- core dependencies -->
 
-		<dependency>
 		<!-- Together with the dependency management section in flink-parent, this
 			pins the Kryo version of transitive dependencies to the Flink Kryo version -->
+		<dependency>
 			<groupId>com.esotericsoftware.kryo</groupId>
 			<artifactId>kryo</artifactId>
+			<scope>provided</scope>
 		</dependency>
 
+		<!-- Core streaming API -->
 		<dependency>
 			<groupId>org.apache.flink</groupId>
 			<artifactId>flink-streaming-java_2.10</artifactId>
 			<version>${project.version}</version>
+			<scope>provided</scope>
 		</dependency>
 
+		<!-- we only need the Apache Storm API, not all the runtime and web UI functionality,
+			so we exclude many of the unnecessary and possibly conflicting dependencies -->
 		<dependency>
 			<groupId>org.apache.storm</groupId>
 			<artifactId>storm-core</artifactId>
@@ -121,8 +129,14 @@ under the License.
 					<groupId>javax.servlet</groupId>
 					<artifactId>servlet-api</artifactId>
 				</exclusion>
-				
-
+				<exclusion>
+					<groupId>clout</groupId>
+					<artifactId>clout</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>hiccup</groupId>
+					<artifactId>hiccup</artifactId>
+				</exclusion>
 			</exclusions>
 		</dependency>