Merge ~lp-markusschade/cloud-init:hetznercloud_ds into cloud-init:master

[Markus Schade]

Add missing dsname for Hetzner Cloud datasource

[Dan Watkins (oddbloke)]

LGTM, I've pointed CI at the branch.

review: Approve

[Server Team CI bot (server-team-bot)]

FAILED: Continuous integration, rev:ac08dbbf365909b338c04bc6b122235814cff9c7
https://jenkins.ubuntu.com/server/job/cloud-init-ci/753/
Executed test runs:
    SUCCESS: Checkout
    FAILED: Unit & Style Tests

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/cloud-init-ci/753/rebuild

review: Needs Fixing (continuous-integration)

[Dan Watkins (oddbloke)]

That failure was because I messed up the CI trigger; another one is running now.

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:ac08dbbf365909b338c04bc6b122235814cff9c7
https://jenkins.ubuntu.com/server/job/cloud-init-ci/754/
Executed test runs:
    SUCCESS: Checkout
    SUCCESS: Unit & Style Tests
    SUCCESS: Ubuntu LTS: Build
    SUCCESS: Ubuntu LTS: Integration
    IN_PROGRESS: Declarative: Post Actions

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/cloud-init-ci/754/rebuild

review: Approve (continuous-integration)

diff --git a/cloudinit/sources/DataSourceHetzner.py b/cloudinit/sources/DataSourceHetzner.py
index 5c75b65..5029833 100644
--- a/cloudinit/sources/DataSourceHetzner.py
+++ b/cloudinit/sources/DataSourceHetzner.py
@@ -28,6 +28,9 @@ MD_WAIT_RETRY = 2
 
 
 class DataSourceHetzner(sources.DataSource):
+
+    dsname = 'Hetzner'
+
     def __init__(self, sys_cfg, distro, paths):
         sources.DataSource.__init__(self, sys_cfg, distro, paths)
         self.distro = distro