MAP: [IOT] Update Foldername case to small letters

Precondition:
MAP Connection for MAS-0 with MNS connected.

Usecase:
1) Establish MAP MAS session for SMS.
2) Send message from carkit and wait for sending success
   event report.
3) Observe if SMS in CK is updated as sent or not.
4) Similar case with read status.

Issue:
SMS in CK is not updated as sent after receiving event report.

Root Cause:
Remote carkit Ford Ecosport is case sensitive towards folder
name. So folder name sent in Capital letters is not processed
by this carkit as case of foldername in Folderlisting and Event
Report is not same (telecom/msg/sent for FolderListing and
telecom/msg/SENT for EventReport).

Fix:
This change updates case of mandatory folder name of MAS-0
account.

Test: Remote Carkit successfully updated status on dashboard.

Bug: 111098687
Change-Id: I250cefc0516a16d573ee5f6d33aad076bfb98c16