This patch set updates watcher api command argument.
1. os_watcher_api_version to os_infra_optim_api_version
2. OS_WATCHER_API_VERSION to OS_INFRA_OPTIM_API_VERSION
This patch set also updated --os-infra-optim-api-version help message.
Change-Id: I2502377b350b8cabfeba80c68f0569d567d24b3a