Romulus: Handle SdBusError Exceptions

Handle exceptions from the sdbusplus method call_noreply API.

The phosphor-fru-fault-monitor app would fail with the following
message on Romulus with the latest sdbusplus changes:
 sd_bus_call noreply: org.freedesktop.DBus.Error.UnknownObject:
   Unknown object '/xyz/openbmc_project/led/groups/core1_fault'.
Add error handling.

Tested: The phosphor-fru-fault-monitor does not core dump on Romulus.

Change-Id: I2bec59c0e0f483e8bfc0cb20a343cb05670212b7
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
1 file changed