Replace custom CEF parse with cef-parser

Additionally create proper testing infrastructure with test fixtures
and merge Raw and Syslog CEF inputs.

pom.xml

@@ -46,6 +46,11 @@
     </properties>
 
     <dependencies>
+        <dependency>
+            <groupId>org.graylog.cef</groupId>
+            <artifactId>cef-parser</artifactId>
+            <version>0.0.1.8</version>
+        </dependency>
         <dependency>
             <groupId>org.graylog2</groupId>
             <artifactId>graylog2-server</artifactId>
@@ -70,6 +75,24 @@
             <version>${junit.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj-core.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>${mockito.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>${jackson.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/org/graylog/plugins/cef/CEFInputModule.java

@@ -4,11 +4,8 @@
 import com.google.inject.TypeLiteral;
 import com.google.inject.multibindings.MapBinder;
 import org.graylog.plugins.cef.codec.CEFCodec;
-import org.graylog.plugins.cef.codec.CEFSyslogCodec;
 import org.graylog.plugins.cef.input.CEFAmqpInput;
 import org.graylog.plugins.cef.input.CEFKafkaInput;
-import org.graylog.plugins.cef.input.CEFSyslogTCPInput;
-import org.graylog.plugins.cef.input.CEFSyslogUDPInput;
 import org.graylog.plugins.cef.input.CEFTCPInput;
 import org.graylog.plugins.cef.input.CEFUDPInput;
 import org.graylog.plugins.cef.pipelines.rules.CEFParserFunction;
@@ -20,12 +17,9 @@ public class CEFInputModule extends PluginModule {
     protected void configure() {
         // Register message input.
         addCodec(CEFCodec.NAME, CEFCodec.class);
-        addCodec(CEFSyslogCodec.NAME, CEFSyslogCodec.class);
 
         addMessageInput(CEFUDPInput.class);
         addMessageInput(CEFTCPInput.class);
-        addMessageInput(CEFSyslogUDPInput.class);
-        addMessageInput(CEFSyslogTCPInput.class);
 
         addMessageInput(CEFAmqpInput.class);
         addMessageInput(CEFKafkaInput.class);