Deprecate jenkins/jenkins package

[adamkpickering]

The jenkins/jenkins package does not meet the criteria for inclusion into the partner charts repository. Specifically, it is not provided by a SUSE "Ready" Verified partner. Accordingly I am deprecating it according to the deprecation and removal policy.

Users should get Jenkins directly from the official repository as described here.

It is expected that CI fails for this PR. This is because CI checks that we do not modify released .tgz files. This is an old design that no longer applies. A work item for overhauling this is present and should be worked on in the near future. Please disregard the CI failure.

A note about the changes in this PR:

• The chart version tarball files must be modified because we are adding deprecated: true to the Chart.yaml file in each chart version.
• The fields in the upstream.yaml file are reordered because partner-charts-ci deprecate does not retain the order of fields when it loads this file. The YAML library that partner-charts-ci uses to write the file orders fields alphabetically, leading to the change.

[recena]

@adamkpickering Can you address the conflict?

[adamkpickering]

@recena done.

[diogoasouza]

Ci is failing @adamkpickering

[adamkpickering]

@diogoasouza it is expected that CI will fail, since we are modifying existing chart versions, and partner-charts-ci validate fails when that is the case. This is not consistent with the design of other partner-charts-ci subcommands, and I plan on addressing this in the near future.