ensure we close channel after making rpc call (#1599)
ensure we close channel after making rpc call (#1599)

Signed-off-by: Joe Grund <06d81316378f5e1e8ce132d1348b3633ffa33f28@whamcloud.io>
intel-hpdd/intel-manager-for-lustre,intel-hpdd/intel-manager-for-lustre,intel-hpdd/intel-manager-for-lustre