Results 2 issues of Olivier-ProGlove

I recently got `Error: 1` while I was expected my `mcumgr` command line to work. See my issue report here: https://github.com/zephyrproject-rtos/zephyr/issues/7924#issuecomment-407478098 Luckily @nvlsianpu pointed me the statement in the documentation...

I recently got `Error: 1` while I was expected my `mcumgr` command line to work. See my issue report here: https://github.com/zephyrproject-rtos/zephyr/issues/7924#issuecomment-407478098 Luckily @nvlsianpu pointed me the statement in the documentation...