Extend the config.efi wait

It can take more than 30 seconds to generate the config in some
situations.

Change-Id: I028301089d9b93dfbd5553a2ea62f8b4c636adbb

pyghmi/ipmi/oem/lenovo/config.py

@@ -251,7 +251,7 @@ class LenovoFirmwareConfig(object):
     def get_fw_options(self):
         options = {}
         data = None
-        for i in range(0, 15):
+        for i in range(0, 30):
             filehandle = self.imm_open("config.efi")
             size = self.imm_size("config.efi")
             data = self.imm_read(filehandle, size)