Update versioning information in master to 1.1.0-dev
Update versioning information in master to 1.1.0-dev

The version tags in master currently refer to 1.0.0-dev.
These need to be updated to 1.1.0-dev now that the release
branch is out.

michaeldayreads/marathon-bigip-ctlr,michaeldayreads/marathon-bigip-ctlr,michaeldayreads/marathon-bigip-ctlr