ethdev: add TTL change actions to flow API
Add support for the following OpenFlow-defined actions:
- RTE_FLOW_ACTION_OF_SET_MPLS_TTL: MPLS TTL.
- RTE_FLOW_ACTION_OF_DEC_MPLS_TTL: decrement MPLS TTL.
- RTE_FLOW_ACTION_OF_SET_NW_TTL: IP TTL.
- RTE_FLOW_ACTION_OF_DEC_NW_TTL: decrement IP TTL.
- RTE_FLOW_ACTION_OF_COPY_TTL_OUT: copy TTL "outwards".
- RTE_FLOW_ACTION_OF_COPY_TTL_IN: copy TTL "inwards".
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>