Description of problem:

Performing a gluster vol reset, turns off 'features.ctr-enabled'. For a tiered, 'features.ctr-enabled' is enabled by default. So, gluster volume reset on a tiered volume shouldn't turn off 'features.ctr-enabled'


Version-Release number of selected component (if applicable):
glusterfs-3.7.5-10.el7rhgs.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Create a tiered volume
2. check if 'features.ctr-enabled' is turned on by doing a gluster vol info
3. Do a 'gluster vol reset <vol name>'
4. check if 'features.ctr-enabled' is turned on by doing a gluster vol info

Actual results:
features.ctr-enabled is turned off

Expected results:
features.ctr-enabled has to be on

Additional info:
If this change in 'features.ctr-enabled' go unnoticed, no promotion/demotion would happen