Update kruize default cpu/memory resources for openshift

[kusumachalasani]

Description

By default kruize uses 2 cores of cpu and 2Gi of memory while deploying kruize. Reducing it to 0.7 cores - 350Mi for kruize and 0.5 cores - 100Mi for kruize-db Also, pvc storage is reduced from 1Gi to 500Mi.

Fixes # (issue)

Type of change

• [ ] Bug fix
• [ ] New feature
• [ ] Docs update
• [ ] Breaking change (What changes might users need to make in their application due to this PR?)
• [ ] Requires DB changes

How has this been tested?

Tested with the new resources with kruize-demo and it works fine.

• [ ] New Test X
• [ ] Functional testsuite

Test Configuration

• Kubernetes clusters tested on: openshift

Checklist :dart:

• [ ] Followed coding guidelines
• [ ] Comments added
• [ ] Dependent changes merged
• [ ] Documentation updated
• [ ] Tests added or updated

Additional information

None