detect-engine: adjust unit tests for hs mpm

The Hyperscan MPM does match deduplication internally (using
HS_FLAG_SINGLEMATCH) and only returns the number of unique matches,
unlike AC.

src/detect-engine-hhd.c

@@ -2016,8 +2016,8 @@ static int DetectEngineHttpHeaderTest18(void)
     /* start the search phase */
     det_ctx->sgh = SigMatchSignaturesGetSgh(de_ctx, det_ctx, p);
     uint32_t r = HttpHeaderPatternSearch(det_ctx, http_buf, http_len, STREAM_TOSERVER);
-    if (r != 2) {
-        printf("expected result 2, got %"PRIu32": ", r);
+    if (r < 1) {
+        printf("expected result >= 1, got %"PRIu32": ", r);
         goto end;
     }
 

src/detect-engine-hrhd.c

@@ -1888,8 +1888,8 @@ static int DetectEngineHttpRawHeaderTest18(void)
     /* start the search phase */
     det_ctx->sgh = SigMatchSignaturesGetSgh(de_ctx, det_ctx, p);
     uint32_t r = HttpRawHeaderPatternSearch(det_ctx, http_buf, http_len, STREAM_TOSERVER);
-    if (r != 2) {
-        printf("expected result 2, got %"PRIu32": ", r);
+    if (r < 1) {
+        printf("expected result >= 1, got %"PRIu32": ", r);
         goto end;
     }
 

src/detect-engine-hrud.c

@@ -2448,8 +2448,8 @@ static int DetectEngineHttpRawUriTest20(void)
     /* start the search phase */
     det_ctx->sgh = SigMatchSignaturesGetSgh(de_ctx, det_ctx, p1);
     uint32_t r = HttpRawUriPatternSearch(det_ctx, http1_buf, http1_len, STREAM_TOSERVER);
-    if (r != 2) {
-        printf("expected 2 result, got %"PRIu32": ", r);
+    if (r < 1) {
+        printf("expected result >= 1, got %"PRIu32": ", r);
         goto end;
     }