Add iot (#937)
Add iot (#937)

* Add iot generated client

* Run component CLI

* Update proto-client version

* Add partial veneer to DeviceManagerClient to default to rest transport

* Address PR comments

* Fix phpcs errors

* Update Iot to new structure

* Add Iot to composer

* Update composer and PR template

* Update gax version

* Pin Travis version to 7.0.25

* Revert travis php version to 7.0

googleapis/google-cloud-php-errorreporting,googleapis/google-cloud-php-errorreporting