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Adrian Vladu 551c4eb318 Add metadata interface for instance data

Some plugins, like the userdata execution plugin, need a standard model
for the instance data, which can be applied by templating engines like
jinja to the userdata.

This way, a user can use this feature to customize her userdata scripts
with values that are specific to that instance runtime env or cloud platform.

The instance data structure is based on the cloud-init specifications:
https://cloudinit.readthedocs.io/en/latest/topics/instancedata.html

The v1 namespace contains a subset of the cloud-init specs for the instance
data.

The ds.meta_data namespace contains all the values the v1 namespace
contains, in order to be compatible with cloud-init, plus a subset
of other instance data.

Change-Id: I5c529498f06fe3c86f7fa3c20fdf3091840c4041

2020-01-16 15:49:39 +02:00

cloudbaseinit

Add metadata interface for instance data

2020-01-16 15:49:39 +02:00

doc

Added empty metadata service: EmptyMetadataService

2020-01-13 16:39:44 +02:00

etc/cloudbase-init

Add support for generating cloudbase-init configuration sample

2016-09-02 11:19:59 +03:00

releasenotes

Updates tox.ini's cover environment