Added decode errors handling to execute method (#16)

Author: vladimir-avinkin

megacli/__init__.py

@@ -38,9 +38,9 @@ def execute(self, cmd):
     proc = subprocess.Popen("{0} {1} -NoLog".format(self.cli_path, cmd), shell = True, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
     out, err = proc.communicate()
     if isinstance(out, bytes):
-      out = out.decode()
+      out = out.decode(errors="ignore")
     if isinstance(err, bytes):
-      err = err.decode()
+      err = err.decode(errors="ignore")
 
     if proc.returncode:
       ex = MegaCLIError(err.rstrip())