fixes a logic error injected by adding StorageClass ops
fixes a logic error injected by adding StorageClass ops

1. Why is this change necessary ?

This commit fixes a logic error introduced due
to addition of StorageClass operations.

Overall, this is part of bigger scheme of things
namely openebs/openebs#693, openebs/openebs#694 and
openebs/openebs#409

This particular commit does a partial
fix of openebs/openebs#694

2. How does this change address the issue ?

- Updates k8s/v1/util.go to include StorageClass
related operations

3. How to verify this change ?

- make should work fine

- The actual verfication will be part of
bigger changes mentioned in above issues.

4. What side effects does this change have ?

- None

openebs/maya,gkGaneshR/maya,AmitKumarDas/maya,openebs/maya,AmitKumarDas/maya,gkGaneshR/maya,prateekpandey14/maya,prateekpandey14/maya,openebs/maya