Revert "Remove snmpd hw_fsys module, remove disk monitoring which is not in use" (sonic-net#1665)

* Revert "[swss]: update swss submodule (sonic-net#1664)"

This reverts commit c74be37.

* Revert "Remove snmpd hw_fsys module, remove disk monitoring which are not in use (sonic-net#1663)"

This reverts commit 3d61df9.

Author: qiluo-msft

dockers/docker-snmp-sv2/snmpd.conf.j2

@@ -60,6 +60,14 @@ sysServices    72
 #  Note that this table will be empty if there are no "proc" entries in the snmpd.conf file
 
 
+#
+#  Disk Monitoring
+#
+                               # 10MBs required on root disk, 5% free on /var, 10% free on all other disks
+disk       /     10000
+disk       /var  5%
+includeAllDisks  10%
+
 #  Walk the UCD-SNMP-MIB::dskTable to see the resulting output
 #  Note that this table will be empty if there are no "disk" entries in the snmpd.conf file
 

dockers/docker-snmp-sv2/supervisord.conf

@@ -29,7 +29,7 @@ stdout_logfile=syslog
 stderr_logfile=syslog
 
 [program:snmpd]
-command=/usr/sbin/snmpd -f -LS4d -u Debian-snmp -g Debian-snmp -I -smux,mteTrigger,mteTriggerConf,ifTable,ifXTable,inetCidrRouteTable,ipCidrRouteTable,ip,disk_hw,hw_fsys -p /run/snmpd.pid
+command=/usr/sbin/snmpd -f -LS4d -u Debian-snmp -g Debian-snmp -I -smux,mteTrigger,mteTriggerConf,ifTable,ifXTable,inetCidrRouteTable,ipCidrRouteTable,ip,disk_hw -p /run/snmpd.pid
 priority=4
 autostart=false
 autorestart=false