Should not proceed if invalid parameter is passed

[turicas]

Description of problem

I was using an old version of postgres plugin and adding an option which was not supported on that version (--shm-size). Even after

How reproducible

Run in an older version of the plugin:

dokku postgres:create mypostgres --shm-size 2g

Steps to Reproduce

1. Install old version
2. Create passing a unsupported CLI parameter on that version

Actual Results

Error messages are shown but the container is created:

/var/lib/dokku/plugins/enabled/postgres/subcommands/create: illegal option -- -
/var/lib/dokku/plugins/enabled/postgres/subcommands/create: illegal option -- s
/var/lib/dokku/plugins/enabled/postgres/subcommands/create: illegal option -- h
       Waiting for container to be ready
       Creating container database
       Securing connection to database
...

Expected Results

Error message saying the parameters are not recognized and exit with error.