Delay mux/sflow/snmp timer after interface-config service (#14506) (#14771)

Author: mssonicbld

files/build_templates/mux.service.j2

@@ -1,7 +1,7 @@
 [Unit]
 Description=MUX Cable Container
 Requires=database.service updategraph.service swss.service
-After=swss.service
+After=swss.service interfaces-config.service
 BindsTo=sonic.target
 After=sonic.target
 StartLimitIntervalSec=1200

files/build_templates/sflow.service.j2

@@ -1,7 +1,7 @@
 [Unit]
 Description=sFlow container
 Requisite=swss.service
-After=swss.service syncd.service hostcfgd.service
+After=swss.service syncd.service hostcfgd.service interfaces-config.service
 BindsTo=sonic.target
 After=sonic.target
 Before=ntp-config.service

files/build_templates/snmp.timer

@@ -1,7 +1,7 @@
 [Unit]
 Description=Delays snmp container until SONiC has started
 PartOf=snmp.service
-After=swss.service
+After=swss.service interfaces-config.service
 
 [Timer]
 OnUnitActiveSec=0 sec