add missing bindings for syslog functinos and concat

(cherry picked from commit 20a5f05)

Author: kroepke

src/main/java/org/graylog/plugins/pipelineprocessor/functions/ProcessorFunctionsModule.java

@@ -49,6 +49,7 @@
 import org.graylog.plugins.pipelineprocessor.functions.messages.SetFields;
 import org.graylog.plugins.pipelineprocessor.functions.strings.Abbreviate;
 import org.graylog.plugins.pipelineprocessor.functions.strings.Capitalize;
+import org.graylog.plugins.pipelineprocessor.functions.strings.Concat;
 import org.graylog.plugins.pipelineprocessor.functions.strings.Contains;
 import org.graylog.plugins.pipelineprocessor.functions.strings.GrokMatch;
 import org.graylog.plugins.pipelineprocessor.functions.strings.Lowercase;
@@ -57,6 +58,10 @@
 import org.graylog.plugins.pipelineprocessor.functions.strings.Swapcase;
 import org.graylog.plugins.pipelineprocessor.functions.strings.Uncapitalize;
 import org.graylog.plugins.pipelineprocessor.functions.strings.Uppercase;
+import org.graylog.plugins.pipelineprocessor.functions.syslog.SyslogFacilityConversion;
+import org.graylog.plugins.pipelineprocessor.functions.syslog.SyslogLevelConversion;
+import org.graylog.plugins.pipelineprocessor.functions.syslog.SyslogPriorityConversion;
+import org.graylog.plugins.pipelineprocessor.functions.syslog.SyslogPriorityToStringConversion;
 import org.graylog.plugins.pipelineprocessor.functions.urls.UrlConversion;
 import org.graylog2.plugin.PluginModule;
 
@@ -95,6 +100,7 @@ protected void configure() {
         addMessageProcessorFunction(Swapcase.NAME, Swapcase.class);
         addMessageProcessorFunction(Uncapitalize.NAME, Uncapitalize.class);
         addMessageProcessorFunction(Uppercase.NAME, Uppercase.class);
+        addMessageProcessorFunction(Concat.NAME, Concat.class);
 
         // json
         addMessageProcessorFunction(JsonParse.NAME, JsonParse.class);
@@ -126,6 +132,12 @@ protected void configure() {
 
         // URL parsing
         addMessageProcessorFunction(UrlConversion.NAME, UrlConversion.class);
+
+        // Syslog support
+        addMessageProcessorFunction(SyslogFacilityConversion.NAME, SyslogFacilityConversion.class);
+        addMessageProcessorFunction(SyslogLevelConversion.NAME, SyslogLevelConversion.class);
+        addMessageProcessorFunction(SyslogPriorityConversion.NAME, SyslogPriorityConversion.class);
+        addMessageProcessorFunction(SyslogPriorityToStringConversion.NAME, SyslogPriorityToStringConversion.class);
     }
 
     protected void addMessageProcessorFunction(String name, Class<? extends Function<?>> functionClass) {