vmax utils.get_masking_view_from_storage_group does not exist

[Eric Harney]

Running pylint shows that "self.utils.get_masking_view_from_storage_group()" is called in a place where it should have been "self.masking.get_masking_view_from_storage_group()".

This was found by the pylint job in the patch that introduce this code, and marked as a failure there: https://review.openstack.org/#/c/409079/

http://logs.openstack.org/79/409079/29/check/gate-cinder-pylint-ubuntu-xenial/2f5b969/console.html.gz

2017-01-23 23:27:53.423187 | Unique errors reported by pylint: was 28, now 29.
2017-01-23 23:27:53.423256 | cinder/volume/drivers/emc/emc_vmax_common.py:5432: [E1101, EMCVMAXCommon._is_volume_in_masking_view] Instance of 'EMCVMAXUtils' has no 'get_masking_view_from_storage_group' member

[Eric Harney (eharney)]

I think this was fixed by

f6d9fbadb VMAX driver - Base functionality, replacing SMI-S with REST