Incorrect OPENEBS_IO_BASE_PATH when mayastor enabled

[rerime]

Description

helm template openebs openebs/openebs --version 3.9.0 --set localprovisioner.basePath="/opt/custom/path" | grep -A 1 'name: OPENEBS_IO_BASE_PATH' 

Output

 - name: OPENEBS_IO_BASE_PATH
 value: "/opt/custom/path"

Enable mayastor

helm template openebs openebs/openebs --version 3.9.0 --set localprovisioner.basePath="/opt/custom/path" --set mayastor.enabled=true | grep -A 1 'name: OPENEBS_IO_BASE_PATH' 

Output

- name: OPENEBS_IO_BASE_PATH
value: "/var/openebs/local"

Expected Behavior

Output

 - name: OPENEBS_IO_BASE_PATH
 value: "/opt/custom/path"