[Flysystem Resolver] Allowing "noPredefinedVisibility" for the visibility config parameter

[comxd]

Q	A
Branch?	2.0
Bug fix?	yes
New feature?	yes
BC breaks?	no
Deprecations?	no
Tests pass?	yes
Fixed tickets
License	MIT

GCP storage buckets now suggest not to use ACL but bucket-wide permissions when possible. Unfortunately trying to upload a file to a bucket using a uniform bucket-level access throws an error:
Cannot insert legacy ACL for an object when uniform bucket-level access is enabled

This PR allows usage of the noPredefinedVisibility value for the "visibility" resolver configuration parameter.

@see

• Issue #1356: It should be possible not to use the visibility handler/visibility settings. thephpleague/flysystem#1357
• [Google Cloud Storage] It should be possible not to use the visibility handler/visibility settings. thephpleague/flysystem#1356

[comxd]

Allowing noPredefinedVisibility can be an another possibility but specific to the Google Cloud Storage adapter.

[coveralls]

Coverage remained the same at 83.924% when pulling 95bc20e on comxd:patch-1 into a564b87 on liip:2.x.

[dbu]

thanks a lot!