Update dotnetcli domain (Azure#47650)

Author: richlander

eng/containers/UbuntuNetCoreKeyring/Dockerfile

@@ -39,7 +39,7 @@ RUN apt-add-repository ppa:git-core/ppa \
 
 # Below adapated from https://hub.docker.com/_/microsoft-dotnet-sdk
 # https://github.com/dotnet/dotnet-docker/blob/b20c03e0644b42167d66a85fe6077ec2428a47fa/src/sdk/5.0/focal/amd64/Dockerfile
-RUN curl -fSL --output dotnet.tar.gz https://dotnetcli.azureedge.net/dotnet/Sdk/$DOTNET_SDK_VERSION_6_0/dotnet-sdk-$DOTNET_SDK_VERSION_6_0-linux-x64.tar.gz \
+RUN curl -fSL --output dotnet.tar.gz https://builds.dotnet.microsoft.com/dotnet/Sdk/$DOTNET_SDK_VERSION_6_0/dotnet-sdk-$DOTNET_SDK_VERSION_6_0-linux-x64.tar.gz \
     && dotnet_sha512='ee0a77d54e6d4917be7310ff0abb3bad5525bfb4beb1db0c215e65f64eb46511f5f12d6c7ff465a1d4ab38577e6a1950fde479ee94839c50e627020328a702de' \
     && echo "$dotnet_sha512  dotnet.tar.gz" | sha512sum -c - \
     && mkdir -p /usr/share/dotnet \
@@ -51,7 +51,7 @@ RUN curl -fSL --output dotnet.tar.gz https://dotnetcli.azureedge.net/dotnet/Sdk/
 
 # Below adapted from https://hub.docker.com/_/microsoft-dotnet-sdk
 # https://github.com/dotnet/dotnet-docker/blob/b20c03e0644b42167d66a85fe6077ec2428a47fa/src/sdk/3.1/focal/amd64/Dockerfile
-RUN curl -fSL --output dotnet.tar.gz https://dotnetcli.azureedge.net/dotnet/Sdk/$DOTNET_SDK_VERSION_3_1/dotnet-sdk-$DOTNET_SDK_VERSION_3_1-linux-x64.tar.gz \
+RUN curl -fSL --output dotnet.tar.gz https://builds.dotnet.microsoft.com/dotnet/Sdk/$DOTNET_SDK_VERSION_3_1/dotnet-sdk-$DOTNET_SDK_VERSION_3_1-linux-x64.tar.gz \
     && dotnet_sha512='dec1dcf326487031c45dec0849a046a0d034d6cbb43ab591da6d94c2faf72da8e31deeaf4d2165049181546d5296bb874a039ccc2f618cf95e68a26399da5e7f' \
     && echo "$dotnet_sha512  dotnet.tar.gz" | sha512sum -c - \
     && tar -ozxf dotnet.tar.gz -C /usr/share/dotnet \