Explain how to upgrade CLI generated pipelines

[andrebriggs]

As a:
developer

I want:
Know what changes I have to make to be existing bedrock generated pipelines to upgrade to the latest release

So that:
I can take advantage of improvements in bedrock

Describe the solution you'd like:
Something like this might be good enough for the moment:

1. Download latest version of Bedrock CLI
2. Navigate to local cloned repo on the branch you’re working on
3. Rename hld-lifecycle.yaml to hld-lifecycle.yaml.backup
4. Run spk project init
5. Tweak newly created hld-lifecycle.yaml by comparing to hld-lifecycle.yaml.backup
6. Rename build-update-hld.yaml to build-update-hld.yaml.backup for service I want
7. Run bedrock service create for service I want (with the original options and flags used in the initial run)
8. Tweak newly created build-update-hld.yaml by comparing to build-update-hld.yaml.backup
9. Repeat steps 6,7, and 8 for any additional services
10. Git commit and push

Acceptance Criteria:
This documentation exists on the Bedrock CLI repo. I know how to update my application pipelines and bedrock.yaml

Does this require updates to documentation?:
Yes

[evanlouie]

documentation should be in service management guide.