RoleRoot missing separator character when deployed to Azure

[tormodu]

When deployed to Azure the RoleRoot point to a drive not a folder like in the emulator.
This leads to an invalid path when constructing PackagePluginPath. The path will look like this:
E:approot\plugins. The code should append a valid separator character to the drive like:
roleRoot = roleRoot + @"";

[garvincasimir]

Changes made