Made AirtimeAnalyzerServer.read_config_file static so CloudStorageUploader can use it.
Reverted MessageListener.msg_received_callback and MessageListener.spawn_analyzer_process back to static methods.
Moved cloud storage settings out of MessageListener and into CloudStorageUploader
Changed Amazon S3 download URL format so it works with S3_EU_WEST region.
Updated amazon config file path in the downloader class
Merge branch 'cc-5709-airtime-analyzer-cloud-storage' into cc-5709-airtime-analyzer-cloud-storage-saas
Added apache-libcloud dependency to airtime_analyzer
Merge branch 'cc-5709-airtime-analyzer-cloud-storage' into cc-5709-airtime-analyzer-cloud-storage-saas