StaticRoute: prefix fails to be configured by FRR

#### Why I did it
Static route configuration failed

#### How I did it
Changed the daemon to which configs are sent.

#### How to verify it
admin@gold101-dut:$ sudo config route add prefix 42.0.0.0/16 nexthop 10.0.0.1
admin@gold101-dut:$
admin@gold101-dut:$ vtysh -c "show run" | grep "ip route"
ip route 42.0.0.0/16 10.0.0.1
admin@gold101-dut:$ show ip route 42.0.0.0/16
Routing entry for 42.0.0.0/16
Known via "static", distance 1, metric 0, best
Last update 00:06:43 ago

10.0.0.1, via Ethernet64

Author: venkit-nexthop

src/sonic-frr-mgmt-framework/frrcfgd/frrcfgd.py

@@ -113,7 +113,7 @@ class BgpdClientMgr(threading.Thread):
             'OSPFV2_ROUTER_DISTRIBUTE_ROUTE': ['ospfd'],
             'OSPFV2_INTERFACE': ['ospfd'],
             'OSPFV2_ROUTER_PASSIVE_INTERFACE': ['ospfd'],
-            'STATIC_ROUTE': ['staticd'],
+            'STATIC_ROUTE': ['mgmtd'],
             'PIM_GLOBALS': ['pimd'],
             'PIM_INTERFACE': ['pimd'],
             'IGMP_INTERFACE': ['pimd'],