Merged
requested to merge marcin.poplawski/vdsm:22782_vdc_scan_devices_remove_exhaustive into master
Removed exhaustive flag for vdc device scan. Exhaustive should only be used as last recovery resort. This is rather temporary fix for 22782. IN future we should rather send scan devices request directly to vDC (without VDSM) with parameters set as needed. Done basic tests for solution. Change will require regression testing for all vDCs (in particular device discovery).