rpcclient: always provide `start` parameter for `findstorage` RPC #2439

Job	Run time
Build CLI (ubuntu-20.04, linux, amd64)	39s
Build CLI (ubuntu-20.04, linux, arm64)	58s
Build CLI (windows-2022, windows, amd64)	6m 7s
Build CLI (macos-12, darwin, arm64)	1m 2s
Build and push docker image	13m 35s
Build and push docker image (Windows Server Core)	11m 49s
	34m 10s

Provide feedback