Update to OmniSharp v1.9-alpha7
Update to OmniSharp v1.9-alpha7

OmniSharp/omnisharp-vscode,caslan/omnisharp-vscode,caslan/omnisharp-vscode,seraku24/omnisharp-vscode,OmniSharp/omnisharp-vscode,OmniSharp/omnisharp-vscode,gregg-miskelly/omnisharp-vscode,OmniSharp/omnisharp-vscode,gregg-miskelly/omnisharp-vscode,gregg-miskelly/omnisharp-vscode,OmniSharp/omnisharp-vscode,seraku24/omnisharp-vscode,gregg-miskelly/omnisharp-vscode,caslan/omnisharp-vscode