added UserMetaRepository and UserMetaProvider from orchestra\foundation
add attach and detach role methods
Merge pull request #4 from ahmadshah/feature/memory

Added UserMetaRepository and UserMetaProvider from orchestra\foundation
Merge pull request #5 from ahmadshah/feature/attach-detach-role

Add attach and detach role methods
Fixed test case.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.1'