S3 path doesn't work with annotations

[soulgalore]

As reported in #2329

When trying to implement the path option that exists in S3 and also sending annotations to Graphite the resultUrls is completely ignoring the path option giving me:

INFO: [sitespeedio] Find the result at https://storage.googleapis.com/bucketname/www.my-domain.com/2019-02-21-10-49-01

Instead of (setting path to my-sub-folder/test1):

INFO: [sitespeedio] Find the result at https://storage.googleapis.com/bucketname/my-sub-folder/test1

This gives wrong urls in the annotations.

I do not have the possibility to test the S3 storage plugin but to me it looks like the same problem exists there? I have also inspected the message in the Graphite plugin and cant find any info about the path in there and also the Graphite plugin looks like it is run before storing the results in S3?