Compatibility Issue with Serverless 2.17.0

[Tim Bai]

When I use this plugin, I got some warnings with recent Serverless version (2.17.0):

Serverless: Configuration warning:
Serverless:   at 'functions.publisherV1': unrecognized property 'allowAccess'
Serverless:   at 'functions.healthcheckV1': unrecognized property 'allowAccess'
Serverless:   at 'provider': unrecognized property 'access'

Can anyone fix this please?

[Anton Bazhal]

Serverless introduced schema validation, so we need to extend the schema with our fields.