OATs build fixes, better HTTP error test (grafana#79)

* update to build on net8.0
* improve OATs HTTP test

docker/docker-compose-aspnetcore/http/oats.http-get.yaml

@@ -0,0 +1,17 @@
+docker-compose:
+  generator: lgtm
+  files:
+    - ../docker-compose.oats.yml
+input:
+  - path: /api/HttpClient/Get
+interval: 500ms
+expected:
+  traces:
+    - traceql: '{ name =~ "api/HttpClient/Get" }'
+      spans:
+        - name: 'GET'
+          attributes:
+            http.request.method: GET
+  metrics:
+    - promql: http_client_request_duration_count{http_request_method="GET", http_response_status_code="200"}
+      value: '>= 0'

docker/docker-compose-aspnetcore/http/oats.http-geterror.yaml

@@ -0,0 +1,18 @@
+docker-compose:
+  generator: lgtm
+  files:
+    - ../docker-compose.oats.yml
+input:
+  - path: /api/HttpClient/GetError
+interval: 500ms
+expected:
+  traces:
+    - traceql: '{ name =~ "api/HttpClient/GetError" }'
+      spans:
+        - name: 'GET'
+          attributes:
+            error.type: '500'
+            http.request.method: GET
+  metrics:
+    - promql: http_client_request_duration_count{}
+      value: '>= 0'

examples/net6.0/aspnetcore/Controllers/HttpClientController.cs

@@ -30,7 +30,7 @@ public async Task<ActionResult<IEnumerable<string>>> Get()
     public async Task<ActionResult<IEnumerable<string>>> GetError()
     {
         var client = new HttpClient();
-        var response = await client.GetAsync("http://example.com");
+        var response = await client.GetAsync("http://postman-echo.com/status/500");
         var content = await response.Content.ReadAsStringAsync();
         return Ok(content);
     }

examples/net6.0/aspnetcore/Dockerfile

@@ -4,7 +4,7 @@ FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
 WORKDIR /app
 EXPOSE 80
 
-FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
 WORKDIR /src
 COPY ["examples/net6.0/aspnetcore/aspnetcore.csproj", "examples/net6.0/aspnetcore/"]
 RUN dotnet restore "examples/net6.0/aspnetcore/aspnetcore.csproj"

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
     "rollForward": "latestFeature",
-    "version": "8.0.100-rc.2.23502.2"
+    "version": "8.0.101"
   }
 }