Issues handling a repo on GitHub Enterprise with two connections in keychain

[StanleyGoldman]

Steps:

1. Create a new project and install GitHub for Unity
2. Authenticate to GitHub
3. Authenticate to a GitHub Enterprise instance
4. Publish the project to GitHub Enterprise
5. Save default scene. Commit and push.
6. Lock scene.

Observe:

1. The default name in the user drop down is the GitHub username.
2. That when you right click the Scene in either the Locks View or the Asset Explorer, the only option presented is "Release Lock (Forced)"

Expected:

1. The default name in the user drop down is the GitHub Enterprise username
2. The lock option should show "Release Lock" and "Release Lock (Forced)"