tests: speed & other minor improvements

[KevFan]

Some refactoring to improve testing speed and other minor changes:

• Remove deploying toystore app
  • This is not used at all and deleting a namespace with it deployed takes a lot longer than without (i.e. this can compound for each test and therefore increase the overall test suite runtime)
• Deploy single kuadrant install in BeforeAll/AfterAll in seperate namespace
  • Installing kuadrant takes time and is generally shared between tests so there is no need to set it each time in BeforeEach
  • Tests with these stages must be mark as Ordered. For now this is okay until we are able to run the tests concurrently
• Use spec context and timeouts per spec
  • the BeforeEach time also uses this same timeout (https://onsi.github.io/ginkgo/#the-spectimeout-and-nodetimeout-decorators). Eventually will use this context as timeout and should exit the assertion quicker which makes the overall test complete faster
• Remove unnecessart docker build in test workflow
  • Image is never deployed as part of integration test as the test suite itself runs the controller reconcilers

Integreation test time in now ~34 mins (down from over an hour previously)

[KevFan]

CI Integration test run results:

1. Pass - https://github.com/Kuadrant/kuadrant-operator/actions/runs/8845966967/attempts/1
2. Pass - https://github.com/Kuadrant/kuadrant-operator/actions/runs/8845966967/attempts/2
3. Pass - https://github.com/Kuadrant/kuadrant-operator/actions/runs/8845966967/attempts/3
4. Pass - https://github.com/Kuadrant/kuadrant-operator/actions/runs/8845966967/attempts/4
5. Pass - https://github.com/Kuadrant/kuadrant-operator/actions/runs/8845966967/attempts/5
6. Pass - https://github.com/Kuadrant/kuadrant-operator/actions/runs/8845966967/attempts/6
7. Pass - https://github.com/Kuadrant/kuadrant-operator/actions/runs/8845966967/attempts/7
8. Pass - https://github.com/Kuadrant/kuadrant-operator/actions/runs/8845966967/attempts/8
9. Pass - https://github.com/Kuadrant/kuadrant-operator/actions/runs/8845966967/attempts/9
10. Pass - https://github.com/Kuadrant/kuadrant-operator/actions/runs/8845966967/job/24304790251?pr=565

[KevFan]

Ran integration tests with the latest changes on CI 6 times already and all passed which suggests the changes might be stable now.

Average runtime in now 34mins with these changes

[KevFan]

Last 10 integration test runs has all passed so the changes here are stable at least

[guicassolato]

🏅 Gold! Awesome job, @KevFan! Thank you!