DataSource: move update_events from a class to an instance attribute
Currently, DataSourceAzure updates self.update_events in __init__. As
update_events is a class attribute on DataSource, this updates it for
all instances of classes derived from DataSource including those for
other clouds. This means that if DataSourceAzure is even instantiated,
its behaviour is applied to whichever data source ends up being used for
boot.
To address this, update_events is moved from a class attribute to an
instance attribute (that is therefore populated at instantiation time).
This retains the defaults for all DataSource sub-class instances, but
avoids them being able to mutate the state in instances of other
DataSource sub-classes.
update_events is only ever referenced on an instance of DataSource (or a
sub-class); no code relies on it being a class attribute. (In fact,
it's only used within methods on DataSource or its sub-classes, so it
doesn't even _need_ to remain public, though I think it's appropriate
for it to be public.)
DataSourceScaleway is also updated to move update_events from a
class attribute to an instance attribute, as the class attribute would
now be masked by the DataSource instance attribute.
net/sysconfig: Handle default route setup for dhcp configured NICs
When the network configuration has a default route configured and
another network device that is configured with dhcp, SUSE sysconfig
output should not accept the default route provided by the dhcp
server.
cloud-init-per: POSIX sh does not support string subst, use sed
cloud-init-per is run via /bin/sh which requires POSIX shell
compliance and does not implement string substitution like
bash. Replace these calls with use of sed.
Support locking user with usermod if passwd is not available.
In some cases, the 'passwd' command might not be available, but
'usermod' might be. In debian systems both are provided by the
'passwd' package. In Redhat/Centos passwd comes from 'passwd' package
while 'usermod' comes from `shadow-utils`
This should just support either one with no real cost other than
the check.
clean: correctly determine the path for excluding seed directory
Previously, init.paths.cloud_dir has a trailing slash, which meant that
"/var/lib/cloud//seed" was being compared to "/var/lib/cloud/seed" and
(of course), never matching.
In this commit, switch to using os.path.join to avoid this case (and
update the tests to catch it in future).
helpers/openstack: Treat unknown link types as physical
Some deployments of OpenStack expose link types to the guest which
cloud-init doesn't recognise. These will almost always be physical, so
we can operate more robustly if we assume that they are (whilst warning
the user that we're seeing something unexpected).
pylint now complains about assignment of None from a
return of a function call. This does not account for subclassing
so we resolve this issue by removing the assignment in the unittest.
