change datetime format used in lcm logger filename to avoid ":" characters
change datetime format used in lcm logger filename to avoid ":" characters

the iso format uses ":" as separators which can break scp commands.

openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro