health-check: s/iops/IOps/
health-check: s/iops/IOps/

This very simple change insure consistency with KBps.

Before:
('disk', 'sdb', 'standalone_randread_4k_KBps', 6227),
('disk', 'sdb', 'standalone_randread_4k_iops', '1553 '),

After:
('disk', 'sdb', 'standalone_randread_4k_KBps', 6227),
('disk', 'sdb', 'standalone_randread_4k_IOps', '1553 '),

enovance/edeploy,lebauce/edeploy,lebauce/edeploy,enovance/edeploy,redhat-cip/edeploy,lebauce/edeploy,enovance/edeploy,redhat-cip/edeploy,redhat-cip/edeploy,redhat-cip/edeploy,lebauce/edeploy,enovance/edeploy