Fix typos in error messages and helps
Refs: #3979
Fix log level for expected command failures
Updagrade error message for multiple clouds
Use the default_cloud global option
Refs: #3934 #3979
Change term "remote" to "cloud" when proper
Refs: #3934
Adjust docs to cover multiple clouds functionality
This commit server as a backup mostly, since the adjustments are not yetapplied to docs/commands and all docs/developers kamaki guides.
Update some of the documentation
this commit serves back-up purposes mostly
Document the Upgrade notes for v0.9
Fix PEP8 warning
Adjust all livetests to use cached astakos client
Refs: #3964
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