Multi-ASIC support show ip/v6 route additional parameters (summary, tables,...etc)

[gechiang]

This PR is to port the same changes I made in the master branch PR (#1320) to 201911 branch.
The only difference is in setup.py where I need to modify so the package will include the right set of files. This was not required in the master branch but is needed in 201911 branch.

- What I did
Added Multi-ASIC support of handling "show ip/v6 route summary"
This was not supported for multi-ASIC platform previously.
When running this cmd under multi-ASIC platform the following output are expected:

admin@SONiC:$ show ip route summary -d all
asic0:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            6                    6
static               1                    0
ebgp                 6371                 6371
ibgp                 88                   88
------
Totals               6467                 6466


asic1:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            6                    6
static               1                    0
ebgp                 6371                 6371
ibgp                 88                   88
------
Totals               6467                 6466


asic2:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            14                   14
static               1                    0
ebgp                 43                   43
ibgp                 6408                 6408
------
Totals               6467                 6466


asic3:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            14                   14
static               1                    0
ebgp                 42                   42
ibgp                 6409                 6409
------
Totals               6467                 6466


asic4:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            6                    6
static               1                    0
ebgp                 0                    0
ibgp                 6462                 6458
------
Totals               6470                 6465


asic5:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            6                    6
static               1                    0
ebgp                 0                    0
ibgp                 6462                 6458
------
Totals               6470                 6465


admin@SONiC:$ show ip route summary -n asic2
asic2:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            14                   14
static               1                    0
ebgp                 43                   43
ibgp                 6408                 6408
------
Totals               6467                 6466


admin@SONiC:$ show ip route summary
asic0:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            6                    6
static               1                    0
ebgp                 6371                 6371
ibgp                 88                   88
------
Totals               6467                 6466


asic1:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            6                    6
static               1                    0
ebgp                 6371                 6371
ibgp                 88                   88
------
Totals               6467                 6466


asic2:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            14                   14
static               1                    0
ebgp                 43                   43
ibgp                 6408                 6408
------
Totals               6467                 6466


asic3:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            14                   14
static               1                    0
ebgp                 42                   42
ibgp                 6409                 6409
------
Totals               6467                 6466


admin@SONiC:$
 

- How to verify it
Perform "show ip/v6 route summary" on multi-asic platform to see that this option is now supported.
Before the change:

admin@SONiC:~$ show ip route summary
% Unknown command: show ip route sum 

After the added support:

admin@SONiC:~$ show ip route summary
asic0:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            6                    6
static               1                    0
ebgp                 6371                 6371
ibgp                 88                   88
------
Totals               6467                 6466


asic1:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            6                    6
static               1                    0
ebgp                 6371                 6371
ibgp                 88                   88
------
Totals               6467                 6466


asic2:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            14                   14
static               1                    0
ebgp                 43                   43
ibgp                 6408                 6408
------
Totals               6467                 6466


asic3:
Route Source         Routes               FIB  (vrf default)
kernel               1                    1
connected            14                   14
static               1                    0
ebgp                 42                   42
ibgp                 6409                 6409
------
Totals               6467                 6466


admin@SONiC:$