To support 64 cores on arista skus. Fixesaristanetworks/sonic#77
Remapped recycle ports to lowers core port ids and set appl_param_nof_ports_per_modid to 64.
Eariler the SDK stat polling was erroneously set to once every msec
which is far more frequent than required by SWSS. The new setting, which
is consistent with other vendor SKUs, is once a second. The net result
is reduced CPU MHz by syncd.
Port indexes of front panel ports are not contiguous in multi-asic because we didn't distiguish between
front panel and internal ports, e.g., recycle ports. Fix this by assigning index to front panel port first
and then internal ports.
