Support creating Argo CD apps in namespace other than openshift-gitops

[chetan-rns]

Is your feature request related to a problem? Please describe.

Currently, Kam bootstrap creates Argo CD applications in openshift-gitops namespace. This would work fine because the gitops operator creates a default instance in that namespace. But the instance in openshift-gitops namespace also has privileged permissions for managing cluster configurations. Kam is used for application delivery and the team managing cluster configuration might not be okay with sharing this instance with the application delivery teams.

Describe the solution you'd like

kam should be flexible enough to work with any namespace where an argocd instance is present for application delivery. Perhaps the bootstrap command could ask the argocd namespace as an input?