Add the options used by PXE
rfc4578 (dhcpv4)
93 Client_System (arch type)
94 Client NDI (network Interface id)
97 UUID/GUID client machine option def

rfc5970 (dhcpv6)
59 BOOTFILE_URL
60 BOOTFILE_PARAM
61 CLIENT_ARCH_TYPE
62 NII

Option 60 requires a special class in order to process the length & string tuples

As some unreleated tests used option 59 as an undefined option they needed to be
updated to use another option.