[chore][connector/routing] Migrate logs tests to concise form (#36158)

Follows
#36150

Finishes migrating logs tests to new concise format. 

Also includes minor nonfunctional refactoring in metrics test to match
what was needed for logs.

connector/routingconnector/config_test.go

@@ -276,3 +276,31 @@ func TestValidateConfig(t *testing.T) {
 		})
 	}
 }
+
+type testConfigOption func(*Config)
+
+func withRoute(context, condition string, pipelines ...pipeline.ID) testConfigOption {
+	return func(cfg *Config) {
+		cfg.Table = append(cfg.Table,
+			RoutingTableItem{
+				Context:   context,
+				Condition: condition,
+				Pipelines: pipelines,
+			})
+	}
+}
+
+func withDefault(pipelines ...pipeline.ID) testConfigOption {
+	return func(cfg *Config) {
+		cfg.DefaultPipelines = pipelines
+	}
+}
+
+func testConfig(opts ...testConfigOption) *Config {
+	cfg := createDefaultConfig().(*Config)
+	cfg.MatchOnce = true
+	for _, opt := range opts {
+		opt(cfg)
+	}
+	return cfg
+}

connector/routingconnector/go.mod

@@ -19,7 +19,6 @@ require (
 	go.uber.org/goleak v1.3.0
 	go.uber.org/zap v1.27.0
 	google.golang.org/grpc v1.67.1
-	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
@@ -73,6 +72,7 @@ require (
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240822170219-fc7c04adadcd // indirect
 	google.golang.org/protobuf v1.35.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/ottl => ../../pkg/ottl