Updateing build pipelines to use VS2019

[gabog]

Updated BotBuilder-DotNet-master-CI-PR to use the Windows 2019 VS 2019 hosted agent and the solution build task to use VS 2019

[coveralls]

Pull Request Test Coverage Report for Build 62966

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 69.198%

---

Totals
Change from base Build 61799:	0.0%
Covered Lines:	4210
Relevant Lines:	6084

---

💛 - Coveralls

[fuselabs]

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.AI.Luis.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.AI.QnA.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.ApplicationInsights.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.Azure.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.Dialogs.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.TemplateManager.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Configuration.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Connector.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Schema.dll

[BruceHaley]

OK

[fuselabs]

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.AI.Luis.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.AI.QnA.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.ApplicationInsights.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.Azure.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.Dialogs.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.TemplateManager.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Configuration.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Connector.dll
✔️ No Binary Compatibility issues for Microsoft.Bot.Schema.dll