[Telemetry] Set same settings on memory cache http server that WPR sets.

tools/telemetry/telemetry/core/memory_cache_http_server.py

Index: tools/telemetry/telemetry/core/memory_cache_http_server.py
diff --git a/tools/telemetry/telemetry/core/memory_cache_http_server.py b/tools/telemetry/telemetry/core/memory_cache_http_server.py
index e89316170f6bcaf460bad8e26ec41fcce94bf1c4..9423a25dad6ec76f9245f96540aaec1d98a21803 100644
--- a/tools/telemetry/telemetry/core/memory_cache_http_server.py
+++ b/tools/telemetry/telemetry/core/memory_cache_http_server.py
@@ -23,6 +23,9 @@ ResourceAndRange = namedtuple('ResourceAndRange', ['resource', 'byte_range'])
 
 class MemoryCacheHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
 
+  protocol_version = 'HTTP/1.1'  # override BaseHTTPServer setting
+  wbufsize = -1  # override StreamRequestHandler (a base class) setting
+
   def do_GET(self):
     """Serve a GET request."""
     resource_range = self.SendHead()