* Add v4 auth support for s3

* Update tests
Leave default version as 2 for now

* Correct indents
Small changes due to review

* fix

* revert back a dep

* correct configs for gitlab tests

* Add sequential keys for poc

* Split up versioning unit tests and unversioned.

No robot tests are added as minio doesn't support versioning

* Update version

Fix readme

* Update dependecies

* Update dependecies

* Fix an error in dockerBuild function

* Fix tests

Update dependencies

fix Maven readme links

Merge branch 'master' of https://github.com/emc-mongoose/mongoose-storage-driver-s3 into issue-fixMavenReadmeLinks

Make s3 handler not final

Make s3ResponseHandler and appendHandlers() public as they need to be overridden in inherited classes to apply custom s3 logic

Minor indent changes

S3 bucket versioning req update

Only send a bucket versioning request if user has asked for versioning

Only send a bucket versioning request if user has asked for versioning

add s3 listing interface
Update dependencies

Update base dependency to 4.2.18

Add comment in gitlab CI about specific runners

In gitlabRunner priveledgedMode=true was set in /etc/gitlab-runner/config.toml

Update access modifiers for s3 driver

Object tagging support