ara_m: Fix encoding of DeviceInterfaceVersionDO

Ever since commit 30de9fd8abc9d7c2c541fea7fa4b97c4ca1a54eb in July
we are (properly) using snake_case names in the from_dict (to become
bijective with to_dict).   This code was not updated by accident,
creating an exception when using the `aram_get_config`

Change-Id: If216b56b38ab17d13896074aa726278b9ba16923
Related: OS#6119
---
M pySim/ara_m.py
1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/pySim/ara_m.py b/pySim/ara_m.py
index b4ac747..68244d1 100644
--- a/pySim/ara_m.py
+++ b/pySim/ara_m.py
@@ -295,7 +295,7 @@
     @staticmethod
     def get_config(tp, v_major=0, v_minor=0, v_patch=1):
         cmd_do = DeviceConfigDO()
-        cmd_do.from_dict([{'DeviceInterfaceVersionDO': {
+        cmd_do.from_dict([{'device_interface_version_do': {
                          'major': v_major, 'minor': v_minor, 'patch': v_patch}}])
         return ADF_ARAM.xceive_apdu_tlv(tp, '80cadf21', cmd_do, ResponseAramConfigDO)
 

