Netherite Preview 0.4.0-alpha

• Fixes to linux logging #37
• Fixes for auto scaler, and add support for using blobs instead of tables #42
• Ignore ExtendedSessionsEnabled setting, instead add CacheOrchestrationCursor setting #43
• Reorganize performance tests #50
• Fix bug in activity scheduler #51
• Update package references #54
• Validate that existing taskhubs are connected to the original event hubs, and if not, throw exception with informational message #59
• Mitigations for dll load problem #55, #57
• Minor ETW tracing improvements #60
• Revise connection settings #58
• Fix JSON serialization of format string #47