Insure that wanted response header messages have all of the response headers in them

Signed-off-by: Shmuel Kallner <[email protected]>

Author: shmuelk

test/integration/epp/hermetic_test.go

@@ -814,6 +814,12 @@ func TestFullDuplexStreamed_KubeInferenceModelRequest(t *testing.T) {
 												RawValue: []byte("true"),
 											},
 										},
+										{
+											Header: &configPb.HeaderValue{
+												Key:      "content-type",
+												RawValue: []uint8("application/json"),
+											},
+										},
 									},
 								},
 							},
@@ -913,6 +919,12 @@ func TestFullDuplexStreamed_KubeInferenceModelRequest(t *testing.T) {
 												RawValue: []byte("true"),
 											},
 										},
+										{
+											Header: &configPb.HeaderValue{
+												Key:      "content-type",
+												RawValue: []uint8("application/json"),
+											},
+										},
 									},
 								},
 							},
@@ -1050,6 +1062,18 @@ func TestFullDuplexStreamed_KubeInferenceModelRequest(t *testing.T) {
 												RawValue: []byte("true"),
 											},
 										},
+										{
+											Header: &configPb.HeaderValue{
+												Key:      "content-type",
+												RawValue: []byte("text/event-stream"),
+											},
+										},
+										{
+											Header: &configPb.HeaderValue{
+												Key:      "status",
+												RawValue: []byte("200"),
+											},
+										},
 									},
 								},
 							},