Add LPASS_CONFIG_FILE and LPASS_BLOB_FILE variables.

Author: guilt

scripts/lpass

@@ -68,8 +68,8 @@ S_WHITE = '\033[37m'
 S_RESET = '\033[0m'
 
 LPASS_ENCRYPTION_KEY = '1234567890ABCDEF'
-LPASS_CONFIG_FILE = os.path.expanduser("~/.lpass-config")
-LPASS_BLOB_FILE = os.path.expanduser("~/.lpass-blob")
+LPASS_CONFIG_FILE = os.getenv('LPASS_CONFIG_FILE', os.path.expanduser("~/.lpass-config"))
+LPASS_BLOB_FILE = os.getenv('LPASS_BLOB_FILE', os.path.expanduser("~/.lpass-blob"))
 CLIENT_ID = None  # Usually the IMEI.