Update changelog

(cherry picked from commit 86a3b8cad4)

CHANGELOG.md

@@ -1,4 +1,20 @@
 ## v1.6.1 [unreleased]
+## v1.7 [unreleased]
+
+### New Inputs
+
+- [fibaro](./plugins/inputs/fibaro/README.md) - Contributed by @dynek
+- [nvidia_smi](./plugins/inputs/nvidia_smi/README.md) - Contributed by @jackzampolin
+
+### Features
+
+- [#3964](https://github.com/influxdata/telegraf/pull/3964): Add repl_oplog_window_sec metric to mongodb input.
+- [#3819](https://github.com/influxdata/telegraf/pull/3819): Add per-host shard metrics in mongodb input.
+- [#3999](https://github.com/influxdata/telegraf/pull/3999): Skip files with leading `..` in config directory.
+- [#4021](https://github.com/influxdata/telegraf/pull/4021): Add TLS support to socket_writer and socket_listener plugins.
+- [#4025](https://github.com/influxdata/telegraf/pull/4025): Add snmp input option to strip non fixed length index suffixes.
+
+## v1.6.1 [2018-04-23]
 
 ### Bugfixes
 - [#3835](https://github.com/influxdata/telegraf/pull/3835): Report mem input fields as gauges instead counters.
@@ -10,6 +26,9 @@
 - [#4037](https://github.com/influxdata/telegraf/issues/4037): Fix uptime reporting in system input when ran inside docker.
 - [#3750](https://github.com/influxdata/telegraf/issues/3750): Fix mem input "cannot allocate memory" error on FreeBSD based systems.
 - [#4056](https://github.com/influxdata/telegraf/pull/4056): Fix duplicate tags when overriding an existing tag.
+- [#4062](https://github.com/influxdata/telegraf/pull/4062): Add server argument as first argument in unbound input.
+- [#4063](https://github.com/influxdata/telegraf/issues/4063): Fix handling of floats with multiple leading zeroes.
+- [#4064](https://github.com/influxdata/telegraf/issues/4064): Return errors in mongodb SSL/TLS configuration.
 
 ## v1.6 [2018-04-16]