See merge request !11

Username / Passwords are dynamic variables we got from command line and not constantants. Thus adjust.

See merge request !10

By default runtime tics in miliseconds, no need to wait for 5s as everything is usually much faster.

Use 0.0.0.0 as coupler' default address as anyway Beremiz' IntegrationTests are meant to be run on same machine (coupler <-> runner).