ci: Gather commands from local node
ci: Gather commands from local node

While implementing `LocalExecutor` I failed to send executed commands
into a log file.

This change reuses the same buffer as `SSHMeta` for `LocalExecutor`,
so all commands are logged in the same
log file as if they would be while being executed by `SSHMeta`.

Signed-off-by: Maciej Kwiek <33c1fdf481c8e628d4c6db7ea8dc77f49f2fa5d7@isovalent.com>

tgraf/cilium,tgraf/cilium,cilium/cilium,tgraf/cilium,cilium-team/cilium,tklauser/cilium,cilium-team/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,tklauser/cilium,michi-covalent/cilium,cilium/cilium,tgraf/cilium,tgraf/cilium,tklauser/cilium,tklauser/cilium,cilium/cilium,tklauser/cilium,michi-covalent/cilium,michi-covalent/cilium,tgraf/cilium,michi-covalent/cilium