[l3vpn_ecmp] Deleting and Re-adding the Tunnel doesn't reprogram the Egress service flow rule

Topology
========
In the Topology I have an compute node and Four VM's running on it
and peering with the two Gateways

Testcase Description
====================
Deleting and Re-adding the Tunnel doesn't reprogram the Egress service Flow rule
and the traffic is getting dropped

Flows and Groups Output
=======================
On Deletion of Tunnel
---------------------
cookie=0x8000003, duration=496.410s, table=21, n_packets=491, n_bytes=48118, priority=42,ip,metadata=0x30d40/0xfffffe,nw_dst=1.1.1.1 actions=push_mpls:0x8847,set_field:589824->mpls_label,load:0->NXM_OF_IN_PORT[],load:0x400->NXM_NX_REG6[],resubmit(,220)

On Addition of Tunnel
----------------------
cookie=0x8000003, duration=1221.578s, table=21, n_packets=2413, n_bytes=236474, priority=42,ip,metadata=0x30d40/0xfffffe,nw_dst=1.1.1.1 actions=load:0x90000->NXM_NX_REG0[],load:0xbffff->NXM_NX_REG1[],group:150001