NC | NSFS | Organize Modules/Dependencies

[shirady]

Environment info

• NooBaa Version: current, master
• Platform: NC

This is the place for organizing the dependencies:

1. Move the file src/endpoint/s3/s3_bucket_policy_utils.js to src/util (it is used by the noobaa-cli in src/manage_nsfs/manage_nsfs_validations.js).
2. Move the content of validate_username from src/endpoint/iam/iam_utils.js (it is used by noobaa-cli in src/manage_nsfs/manage_nsfs_validations.js).
3. Use the function generate_id from file src/nc/nc_utils.js in places that used directly mongo_utils.mongoObjectId() (for example: src/cmd/manage_nsfs.js). I think we can copy the content and add a reference and credit instead of any use of the module src/util/mongo_utils.js in src/nc/nc_utils.js.