Serverless Deprecation Warnings

[jvanalst]

Deprecation warning: Unresolved variable references will be communicated with a thrown error, starting from next major
More Info: https://www.serverless.com/framework/docs/deprecations/#VARIABLES_ERROR_ON_UNRESOLVED
Serverless: Deprecation warning: Serverless constructor expects service configuration details to be provided.
Serverless: Deprecation warning: Serverless constructor expects service configuration details to be provided.
Starting from next major Serverless will no longer auto resolve it internally.
More Info: https://www.serverless.com/framework/docs/deprecations/#MISSING_SERVICE_CONFIGURATION
Serverless: Deprecation warning: Serverless constructor expects resolved CLI commands and options to be provided via "config.commands" and "config.options".
Starting from next major Serverless will no longer auto resolve CLI arguments internally.
More Info: https://www.serverless.com/framework/docs/deprecations/#MISSING_COMMANDS_OR_OPTIONS_AT_CONSTRUCTION