So, this can be done but it will require some config on your part.
Firstly, you need follow these instructions (scroll down to Managing authentication by key), the folder is userdata/etc/keys.properties, to configure karaf to use ssh certs for authentication and make sure the openhab user is configured to use those certs. This will make it so you don’t have to enter a password for the openhab user to ssh into the karaf console.
Then you can issue the following command through executeCommandLine or the Exec binding:
ssh -p 8101 openhab@localhost 'bundle:restart 208, 211'
There are other approaches you can take with sshpass but you really should use the ssh keys instead.