Add pulsar-io-influxdb to distribution. (#4678)

(cherry picked from commit 1b64a6e1)

distribution/io/src/assemble/io.xml

@@ -66,5 +66,6 @@
     <file><source>${basedir}/../../pulsar-io/mongo/target/pulsar-io-mongo-${project.version}.nar</source></file>
     <file><source>${basedir}/../../pulsar-io/debezium/mysql/target/pulsar-io-debezium-mysql-${project.version}.nar</source></file>
     <file><source>${basedir}/../../pulsar-io/debezium/postgres/target/pulsar-io-debezium-postgres-${project.version}.nar</source></file>
+    <file><source>${basedir}/../../pulsar-io/influxdb/target/pulsar-io-influxdb-${project.version}.nar</source></file>
   </files>
 </assembly>

site2/website/data/connectors.js

@@ -94,5 +94,11 @@ module.exports = [
         longName: 'Twitter Firehose',
         type: 'Source',
         link: 'https://developer.twitter.com/en/docs'
+    },
+    {
+        name: 'influxdb',
+        longName: 'InfluxDB',
+        type: 'Source',
+        link: 'https://www.influxdata.com/products/influxdb-overview/'
     }
 ]