[win32] fix crt path lookup

config.py

@@ -384,8 +384,13 @@ def set_win32_cert_path():
     will be able to override this in a clean way. For now, we have to monkey patch
     tornado.httpclient._DEFAULT_CA_CERTS
     '''
-    crt_path = os.path.join(os.environ['PROGRAMFILES'], 'Datadog', 'Datadog Agent',
-        'ca-certificates.crt')
+    if hasattr(sys, 'frozen'):
+        # we're frozen - from py2exe
+        prog_path = os.path.dirname(sys.executable)
+        path = os.path.join(prog_path, 'ca-certificates.crt')
+    else:
+        cur_path = os.path.dirname(__file__)
+        path = os.path.join(cur_path, 'ca-certificates.crt')
     import tornado.simple_httpclient
     tornado.simple_httpclient._DEFAULT_CA_CERTS = crt_path