python/rpc: Unify parameters in all calls bdev.py

To be able to generate rpc calls in python required common format of
rpc functions.
All optional parameters checked by `is not None` expression because in
case of boolean parameter `False` can be a value to send with call.
This patch unify all functions in bdev.py

Change-Id: I62924227bfd2714fbaeca701285361f4c2e486c3
Signed-off-by: Eugene Kobyak <eugene.kobyak@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/23160


Reviewed-by: Jim Harris <jim.harris@samsung.com>
Reviewed-by: Krzysztof Karas <krzysztof.karas@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>