Cloning a VSTS repo feature does not work

[musienko-maxim]

Reproduction Steps:
Precondition: git URL from VSTS repository

1. Get a https url from VSTS repository
2. Go to the IDE and Workspace -> Import project -> select GIt
3. Paste the VSTS git repo url and click import button
   Expected behavior: The project should be cloned. Pull/push operations should be available from the IDE
   Observed behavior: We have next exception: java.lang.IllegalStateException: org.eclipse.che.ide.websocket.rest.exceptions.UnauthorizedException: URL_TO_VSVS_REPO: Authentication is required but no CredentialsProvider has been registered

See also screenshot:

Expected behavior: after clicking on the fires item the Compare button should be enabked
Observed behavior: after clicking on the fires item the Compare button still disabled
Che version: 4.5.0
OS and version: Ubuntu OS 14.0
Docker version: 1.11.2
Che install: local bundle
Additional information:

• Problem started happening recently, didn't happen in an older version of Che: YES

[mshaposhnik]

Pls create appropriate issue in CODENVY, but leave this one too, because fix will also affect CHE code.

[musienko-maxim]

Has been added to codenvy/codenvy#431 in CODENVY

[riuvshin]

close as duplicate of codenvy/codenvy#431