Start at saving AWSProvider data in the OSP.

[#56443410]
Merge branch 'origin/develop'
Making use of OSServer method for seeing if download is ready. Generally thinking through CloudAnalysisDriver again. Making iterationProgress signal more robust, etc.

[#56443410]
Merge branch 'origin/develop'
AWS items -> OSP.

[#56443410]
Final changes before merge to pat branch.

[#56443410]
Merge pull request #537 from NREL/20130926_ETH_FinishCloudAnalysisDriver_56443410

20130926 eth finish cloud analysis driver 56443410