Proposed title of this feature request

Override 'schedulerName' for each Loki component in the LokiStack custom resource

Description: 

Users of Portworx storage are requesting the implementation of a storage-conscious scheduler configuration. While performance is important, users prioritize storage considerations as well. Portworx operates by utilizing locally attached storage on each node. However, issues arise when the default scheduler places pods on nodes without the necessary replicas, leading to pod errors. Although a workaround utilizing a Portworx 'shared' storage class with NFS exists, users are seeking a more effective solution through an enhanced storage-conscious scheduler.

REF: https://docs.portworx.com/portworx-enterprise/operations/operate-kubernetes/storage-operations/stork