ffdc: Move utilities to subdir lib.

Test:
- New structure within openbmc-test-automation
- New structure stand-alone

Signed-off-by: Peter D  Phan <peterp@us.ibm.com>
Change-Id: If707cded8840357dca40577583f1afb418c91d7c
diff --git a/ffdc/ssh_utility.py b/ffdc/lib/ssh_utility.py
similarity index 100%
rename from ffdc/ssh_utility.py
rename to ffdc/lib/ssh_utility.py
diff --git a/ffdc/telnet_utility.py b/ffdc/lib/telnet_utility.py
similarity index 100%
rename from ffdc/telnet_utility.py
rename to ffdc/lib/telnet_utility.py