pldmtool: Implement GetFRURecordTable.
pldmtool: Implement GetFRURecordTable.

Example output:

./pldmtool fru GetFruRecordTable
FRU Record Set Identifier: 1
FRU Record Type: 254(OEM)
Number of FRU fields: 1
Encoding Type for FRU fields: 1(ASCII)
FRU Record Set Identifier: 1
FRU Record Type: 1(General)
Number of FRU fields: 2
Encoding Type for FRU fields: 1(ASCII)
        FRU Field Type: Model
        FRU Field Length: 5
        FRU Field Value: 1234A
        FRU Field Type: Serial Number
        FRU Field Length: 6
        FRU Field Value: SNR123
FRU Record Set Identifier: 1
FRU Record Type: 254(OEM)
Number of FRU fields: 15
Encoding Type for FRU fields: 1(ASCII)
...

Change-Id: I470beb708ac0ad50da9bc74f1f26295c5529fac1
Signed-off-by: Sridevi Ramesh <cb5e1f81dd390dfc3a9afc08ab7298b7ab4296f5@in.ibm.com>

openbmc/pldm,openbmc/pldm,openbmc/pldm