tests/net_inet: Update tls test to work with CPython and incl new site.

CPython only supports the server_hostname keyword arg via the SSLContext
object, so use that instead of the top-level ssl.wrap_socket.  This allows
the test to run on CPython the same as uPy.

Also add the "Host:" header to correctly make a GET request (for URLs that
are hosted on other servers).  This is not strictly needed to test the SSL
connection but helps to debug things when printing the response.

tests/net_inet/test_tls_sites.py

@@ -6,6 +6,8 @@ try:
     import ussl as ssl
 except:
     import ssl
+    # CPython only supports server_hostname with SSLContext
+    ssl = ssl.SSLContext()
 
 
 def test_one(site, opts):
@@ -22,7 +24,7 @@ def test_one(site, opts):
         else:
             s = ssl.wrap_socket(s)
 
-        s.write(b"GET / HTTP/1.0\r\n\r\n")
+        s.write(b"GET / HTTP/1.0\r\nHost: %s\r\n\r\n" % bytes(site, 'latin'))
         resp = s.read(4096)
 #        print(resp)
 
@@ -34,6 +36,7 @@ SITES = [
     "google.com",
     "www.google.com",
     "api.telegram.org",
+    {"host": "api.pushbullet.com", "sni": True},
 #    "w9rybpfril.execute-api.ap-southeast-2.amazonaws.com",
     {"host": "w9rybpfril.execute-api.ap-southeast-2.amazonaws.com", "sni": True},
 ]

tests/net_inet/test_tls_sites.py.exp

 google.com ok
 www.google.com ok
 api.telegram.org ok
+api.pushbullet.com ok
 w9rybpfril.execute-api.ap-southeast-2.amazonaws.com ok