examples/ip_pipeline: rework flow classification CLI

examples/ip_pipeline: rework flow classification CLI

This patch modifies flow classifications pipeline command line
interface. All commands are merged into one cmd_fc_parsed.
Additionally a classification for ipv6, ipv4 and qinq can be added from
configuration file.

1. flow add qinq bulk
File line format:
qinq <svlan> <cvlan> port <port ID> id <flow ID>
File line example:
qinq 1 2 port 3 id 0

2. flow add ipv4 bulk
File line format:
ipv4 <sipaddr> <dipaddr> <sport> <dport> <proto> port <port ID> id
<flowID>
File line example:
ipv4 1.2.3.4 10.20.30.40 63 127 6 port 2 id 999

3. flow add ipv6 bulk
File line format:
ipv6 <sipaddr> <dipaddr> <sport> <dport> <proto> port <port ID> id
<flowID>

Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Signed-off-by: Marcin Kerlin <marcinx.kerlin@intel.com>
Signed-off-by: Slawomir Mrozowicz <slawomirx.mrozowicz@intel.com>
Signed-off-by: Michal Kobylinski <michalx.kobylinski@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>