Add keystone "Unable to establish connection" checks

Registered by Pierre Padrixe (stannie)

Currently we've the following behavior when keystone auth_url is wrong: http://paste.openstack.org/show/61649/
A user-friendly output should be displayed to the user.

Blueprint information

Status:
Complete
Approver:
None
Priority:
Undefined
Drafter:
Pierre Padrixe (stannie)
Direction:
Needs approval
Assignee:
Pierre Padrixe (stannie)
Definition:
New
Series goal:
None
Implementation:
Implemented
Milestone target:
None
Started by
Pierre Padrixe (stannie)
Completed by
Pierre Padrixe (stannie)

Related branches

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Gerrit topic: https://review.openstack.org/#q,topic:bp/keystone-auth-url-wrong,n,z

Addressed by: https://review.openstack.org/68398
    Add keystone host unreachable checks

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Work Items

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