[Test PR] for upload memory leak

[Gautham-coder]

• SLH allocation and free for the parser. This same SLH is used to create buffer for input content.
  https://github.com/zowe/zowe-common-c/blob/c6f577921787ec7489341270dfffd5b0878b7e60/c/httpserver.c#L5829 - makeSLH
  https://github.com/zowe/zowe-common-c/blob/c6f577921787ec7489341270dfffd5b0878b7e60/c/httpserver.c#L6215 - SLHFree
  https://github.com/zowe/zowe-common-c/blob/c6f577921787ec7489341270dfffd5b0878b7e60/c/alloc.c#L604 - safeFree64Internal() ; free() not done
• request and parser share the same SLH. Response has its own slh which is freed in finishResponse().

`************** Code flow for each chunk write **************

1. httpHandleTCP()
   https://github.com/zowe/zowe-common-c/blob/c6f577921787ec7489341270dfffd5b0878b7e60/c/httpserver.c#L5829
   - ShortLivedHeap slh = makeShortLivedHeap(READ_BUFFER_SIZE=65536, maxBlocks=1024);
   - peerExtension = makeSocketExtension(.., slh,..)
   - httpConversation = makeHttpConversation(peerExtension,(HttpServer)(module->data));
   -> conversation->parser = makeHttpRequestParser(socketExtension->slh); / allocates the parser on the SLH */

2. httpWorkElementHandler
   case START_RESP

3. handlePeerSocketRead() ->
   - SocketExtension *peerExtension = extension;
   - HttpConversation conversation = (HttpConversation)extension->protocolHandler;

   4. doHttpReadWork() ->
      - socketRead()
      - processHttpFragment(parser,readBuffer,bytesRead);

      5. processHttpFragment(parser,readBuffer,bytesRead)); ->
         - After processing headers
         https://github.com/zowe/zowe-common-c/blob/8104c38753286bb15579cbb810adb78be51ea8c0/c/httpserver.c#L2330
         - parser->content = SLHAlloc(parser->slh,parser->specifiedContentLength);

         ### Loop -> httpHandleTCP  till all the content is read from the chunk and copied into parser->content, then create the create request below.
         

      6. resetParserAndEnqueue(parser) ->
         https://github.com/zowe/zowe-common-c/blob/8104c38753286bb15579cbb810adb78be51ea8c0/c/httpserver.c#L2343

      7. enqueueLastRequest(parser) ->
         - HttpRequest newRequest = (HttpRequest)SLHAlloc(parser->slh,sizeof(HttpRequest));
         - newRequest->contentBody = copyString(parser->slh, parser->content, parser->specifiedContentLength);

      8. httpWorkElementHandler() ->

         9. doHttpResponseWork() ->
            HttpRequest *firstRequest = dequeueHttpRequest(parser);
            response = makeHttpResponse(firstRequest,parser->slh,conversation->socketExtension->socket);
            - ShortLivedHeap *responseSLH = makeShortLivedHeap(65536,100);
            handleHttpService()

         10. serveRequest() ->

         11. serveUnixFileContents(HttpService *service, HttpResponse *response) ->
             response->request->contentBody

         12. doChunking() -> (if 1st chunk assignSessionID->respondWithSessionID->handlePeerSocketRead)

         13. writeAsciiDataFromBase64() ->

         14. finishResponse() ->

             • SLHFree(response->slh);

   5. doHttpReadWork (BACK HERE)

4. handlePeerSocketRead() (BACK HERE)
   https://github.com/zowe/zowe-common-c/blob/8104c38753286bb15579cbb810adb78be51ea8c0/c/httpserver.c#L5723

5. httpWorkElementHandler()
   HTTP_CLOSE_CONVERSATION - SLHFree(sext->slh) This is the SLH allocated in '1'
   https://github.com/zowe/zowe-common-c/blob/c6f577921787ec7489341270dfffd5b0878b7e60/c/httpserver.c#L6215

6. httpHandleTCP() (BACK HERE)

************** END OF PROCESSING CHUNK **************`

zowe-common-c: zowe/zowe-common-c#540