MEDIUM: stick-table: make the use of 'gpc' excluding the use of 'gpc0/1''

MEDIUM: stick-table: make the use of 'gpc' excluding the use of 'gpc0/1''

This patch makes the use of 'gpc' excluding the use of the legacy
types 'gpc0' and 'gpc1" on the same table.

It also makes the use of 'gpc_rate' excluding the use of the legacy
types 'gpc0_rate' and 'gpc1_rate" on the same table.

The 'gpc0' and 'gpc1' related fetches and actions will apply
to the first two elements of the 'gpc' array if stored in table.

The 'gpc0_rate' and 'gpc1_rate' related fetches and actions will apply
to the first two elements of the 'gpc_rate' array if stored in table.