* process float vector and binary vector field
on the search result
Signed-off-by: Nyefu.chen <yefu.chen@zilliz.com>

* add more debug info on etcd
Signed-off-by: Nyefu.chen <yefu.chen@zilliz.com>

* add debug info when grpc failed
Signed-off-by: Nyefu.chen <yefu.chen@zilliz.com>