http: adjust unit test to multirage changes

Acked-by: Paul Millar
Target: master, 2.8, 2.7, 2.6
Require-book: no
Require-notes: no
(cherry picked from commit a000a73)
Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>

modules/dcache/src/test/java/org/dcache/http/HttpPoolRequestHandlerTests.java

@@ -337,23 +337,21 @@ public void shouldDeliverPartialFileIfReceivesRequestWithMultipleRanges()
         assertThat(_response, hasHeader(CONTENT_TYPE,
                 "multipart/byteranges; boundary=\"__AAAAAAAAAAAAAAAA__\""));
         assertThat(_response, hasHeader(DIGEST, "adler32=03da0195"));
-        assertThat(_response, not(hasHeader(CONTENT_LENGTH)));
+        assertThat(_response, hasHeader(CONTENT_LENGTH, "150"));
         assertThat(_response, not(hasHeader(CONTENT_RANGE)));
         assertThat(_response, not(hasHeader(CONTENT_DISPOSITION)));
 
         assertThat(_additionalWrites, hasSize(5));
         assertThat(_additionalWrites.get(0), isMultipart().
                 emptyLine().
                 line("--__AAAAAAAAAAAAAAAA__").
-                line("Content-Length: 1").
                 line("Content-Range: bytes 0-0/1024").
                 emptyLine());
         assertThat(_additionalWrites.get(1),
                 isPartialRead("/path/to/file", 0, 0));
         assertThat(_additionalWrites.get(2), isMultipart().
                 emptyLine().
                 line("--__AAAAAAAAAAAAAAAA__").
-                line("Content-Length: 1").
                 line("Content-Range: bytes 1023-1023/1024").
                 emptyLine());
         assertThat(_additionalWrites.get(3),