Rather than grepping through the get_bdevs output for a specific bdev's
name, use the new optional get_bdevs name parameter to check if the
specific bdev we want is available.
Change-Id: I14d82c81321d968c5553205af32d12c62533fb1c
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/375807
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>