Use the default password

[iDneprov]

If do not set withRouterPassword an error message appears, such as incorrect password.
Why not use the default password or set a password when the container is starting and use it to connect?

[dkasimovskiy]

The are to possible ways to deal with this issue:

1. Use default Tarantool/Cartridge username/password or
2. Remove default username/password and force users to create and pass credentials