Add net11.0 framework to gRPC proxy load jobs (#2163)

The grpc-dotnet master branch now multi-targets net10.0 (v2.76.0),
causing NETSDK1045 errors on benchmark agents with only SDK 9.0. Add
--load.framework net11.0 to all gRPC proxy scenarios (YARP, NGinx,
Envoy) so crank installs an SDK that supports the net10.0 transitive
dependencies.

This is consistent with how grpc-scenarios.yml already handles this.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: LoopedBard3

build/proxies-scenarios.yml

@@ -31,7 +31,7 @@ parameters:
     condition: 'true'
   - displayName: YARP gRPC
     scenario: proxy-yarp-grpc
-    arguments: $(proxyGRPCJobs) --property proxy=yarp --application.framework net11.0
+    arguments: $(proxyGRPCJobs) --property proxy=yarp --application.framework net11.0 --load.framework net11.0
     supportsGRPC: true
     condition: 'true'
   - displayName: YARP-net80
@@ -59,7 +59,7 @@ parameters:
     condition: Math.round(Date.now() / 43200000) % 5 == 0 # once every 5 half-days
   - displayName: NGinx gRPC
     scenario: proxy-nginx-grpc
-    arguments: $(proxyGRPCJobs) --property proxy=nginx --variable warmup=0
+    arguments: $(proxyGRPCJobs) --property proxy=nginx --variable warmup=0 --load.framework net11.0
     supportsGRPC: true
     condition: Math.round(Date.now() / 43200000) % 5 == 1 # once every 5 half-days
   - displayName: HAProxy
@@ -77,7 +77,7 @@ parameters:
     condition: Math.round(Date.now() / 43200000) % 5 == 3 # once every 5 half-days
   - displayName: Envoy gRPC
     scenario: proxy-envoy-grpc
-    arguments: $(proxyGRPCJobs) --property proxy=envoy
+    arguments: $(proxyGRPCJobs) --property proxy=envoy --load.framework net11.0
     supportsGRPC: true
     condition: Math.round(Date.now() / 43200000) % 5 == 4 # once every 5 half-days