Merge branch 'Product/1287-dotnet5Sharepoint' into 'Sprint/2021-03'

.gitlab-ci.yml

build.cake

build.ps1

build.sh

src/STS/Controllers/HomeController.cs

src/STS/Controllers/ORCiDController.cs

src/STS/Controllers/ShibbolethController.cs

src/STS/Properties/AssemblyInfo.cs

src/STS/STS.csproj

src/STS/Security/CustomSecurityTokenService.cs

src/STS/Startup.cs

src/STS/Utils/MergeUtil.cs

src/lib/Sustainsys.Saml2.AspNetCore2.dll

src/lib/Sustainsys.Saml2.dll

tools/packages.config