bootloader: Cleanup pylint complaints

Ignore the warning about too many positional arguments since this is
part of the existing API.
Clean up trailing whitespace.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>

Author: rosslagerwall

xcp/bootloader.py

@@ -76,6 +76,7 @@ def setKernelArgs(self, args):
         self.kernel_args = ' '.join(args)
 
 class Bootloader(object):
+    # pylint: disable=too-many-positional-arguments
     def __init__(self, src_fmt, src_file, menu = None, menu_order = None,
                  default = None, timeout = None, serial = None,
                  location = None, env_block = None):
@@ -150,7 +151,7 @@ def parse_boot_entry(line, skip=1):
             entry = parts[skip] if len(parts) > skip else ""
             args = parts[skip + 1] if len(parts) > (skip + 1) else ""
             return entry, args
-        
+
         fh = open_textfile(src_file, "r")
         try:
             for line in fh: