phosphor-ldap-conf: add unit tests

Added uinit tests to create and to restore config file.

Change-Id: Idf5231d46542cda1ff84241aa67aadd91a4788d6
Signed-off-by: Nagaraju Goruganti <ngorugan@in.ibm.com>
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
Signed-off-by: Nagaraju Goruganti <ngorugan@in.ibm.com>
9 files changed