Update changelog and supporting files for cloud_pubsub

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## v1.10 [unreleased]
 
+#### New Inputs
+
+- [cloud_pubsub](/plugins/inputs/cloud_pubsub/README.md) - Contributed by @emilymye
+
 #### Features
 
 - [#4345](https://github.com/influxdata/telegraf/pull/4345): Allow for force gathering ES cluster stats.

README.md

@@ -145,6 +145,7 @@ For documentation on the latest development code see the [documentation index][d
 * [ceph](./plugins/inputs/ceph)
 * [cgroup](./plugins/inputs/cgroup)
 * [chrony](./plugins/inputs/chrony)
+* [cloud_pubsub](./plugins/inputs/cloud_pubsub) Google Cloud Pub/Sub
 * [conntrack](./plugins/inputs/conntrack)
 * [consul](./plugins/inputs/consul)
 * [couchbase](./plugins/inputs/couchbase)

docs/LICENSE_OF_DEPENDENCIES.md

@@ -115,6 +115,7 @@ following works:
 - golang.org/x/crypto [BSD 3-Clause Clear License](https://github.com/golang/crypto/blob/master/LICENSE)
 - golang.org/x/net [BSD 3-Clause Clear License](https://github.com/golang/net/blob/master/LICENSE)
 - golang.org/x/oauth2 [BSD 3-Clause "New" or "Revised" License](https://github.com/golang/oauth2/blob/master/LICENSE)
+- golang.org/x/sync [BSD 3-Clause "New" or "Revised" License](https://github.com/golang/sync/blob/master/LICENSE)
 - golang.org/x/sys [BSD 3-Clause Clear License](https://github.com/golang/sys/blob/master/LICENSE)
 - golang.org/x/text [BSD 3-Clause Clear License](https://github.com/golang/text/blob/master/LICENSE)
 - google.golang.org/api [BSD 3-Clause "New" or "Revised" License](https://github.com/googleapis/google-api-go-client/blob/master/LICENSE)

plugins/inputs/cloud_pubsub/README.md

@@ -6,9 +6,6 @@ and creates metrics using one of the supported [input data formats][].
 
 ### Configuration
 
-This section contains the default TOML to configure the plugin.  You can
-generate it using `telegraf --usage pubsub`.
-
 ```toml
 [[inputs.pubsub]]
 ## Required. Name of Google Cloud Platform (GCP) Project that owns