Cleanup update_if_exists vs skip_if_exists.

[agorajek]

Summary

I noticed that in the case of create_namespace() and create_tag() the argument update_if_exists was misleading. Adjusted it to skip_if_exists . The update if exist functionality is still possible through the get()/save() pattern.

Also found one more issue with the _deploy_namespaces() method of the project compile. It was erroring out because of existing namespaces, example:

  users.olek.project1.xp.source-controlled     tag         Tag users.olek.project1.xp.source-controlled successfully created (or updated)
  users.olek.project1                          namespace   {'message': 'Node namespace `users.olek.project1` already exists'}

Test Plan

Unit test plus test deployments of my example YAML project.

Now getting a warning if the namespace exists:

                                                                                                                      XP Nodes
                                                                                                     Deployment for Prefix: users.olek.project1

  Name                                         Type        Message
 ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
  users.olek.project1.xp.source-controlled     tag         Tag users.olek.project1.xp.source-controlled successfully created (or updated)
  users.olek.project1                          namespace   Namespace users.olek.project1 already exists
  users.olek.project1.xp                       namespace   Namespace users.olek.project1.xp already exists
  users.olek.project1.xp.foo-bar               dimension   Node users.olek.project1.foo-bar successfully created (or updated)
...

• [x] PR has an associated issue: #1192
• [x] make check passes
• [x] make test shows 100% unit test coverage

Deployment Plan

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