quickstart single-cluster missing "kustomize" as a prerequisite

[zkraus]

Describe the bug
When following prerequisites and steps on https://docs.kuadrant.io/latest/getting-started-single-cluster/
there is no kustomize listed as requirement.

To Reproduce
Steps to reproduce the behavior:

1. on "clean" system (never done quickstart)
2. install requirements listed
3. run quickstart oneliner
4. See error:

bash: line 465: kustomize: command not found                                                                                                
error: no objects passed to apply  

Expected behavior
Quickstart should contain kustomize as prerequisite so user will install it.

[zkraus]

Will be resolved by #161

[david-martin]

This has been addressed by the changes in Kuadrant/kuadrant-operator#1131 and #186

Thanks for catching this @zkraus