Refactor patches for net-snmp package

Use net-snmp-config package to package script and service file for
net-snmp package.
Removed servcie/config/script related patches and let net-snmp-config
package be responsible for it.
Keep another meta patch for build configuration related changes.

Deployment test and ping test between VMs pass
Config,serivce and script files check pass.

Story: 2003768
Task: 27586
Depends-on: https://review.openstack.org/#/c/616097

Change-Id: Ic64543447d04543fdf9eafdc3d9ae4e2521c10df
Signed-off-by: zhipengl <zhipengs.liu@intel.com>

net-snmp-config/centos/build_srpm.data

@@ -0,0 +1,2 @@
+SRC_DIR="files"
+TIS_PATCH_VER=0

net-snmp-config/centos/net-snmp-config.spec

@@ -0,0 +1,48 @@
+Summary: net-snmp-config
+Name: net-snmp-config
+Version: 1.0
+Release: %{tis_patch_ver}%{?_tis_dist}
+License: Apache-2.0
+Group: base
+Packager: StarlingX
+URL: unknown
+BuildArch: noarch
+Source: %name-%version.tar.gz
+
+Requires: net-snmp
+Summary: package StarlingX configuration files of net-snmp to system folder.
+
+%description
+package StarlingX configuration files of net-snmp to system folder.
+
+%prep
+%setup
+
+%build
+
+%install
+%{__install} -d %{buildroot}%{_datadir}/starlingx
+%{__install} -d %{buildroot}%{_datadir}/snmp
+%{__install} -d %{buildroot}%{_initrddir}
+%{__install} -d  %{buildroot}%{_sysconfdir}/systemd/system
+
+%{__install} -m 644 stx.snmpd.conf    %{buildroot}%{_datadir}/starlingx/stx.snmpd.conf
+%{__install} -m 755 stx.snmpd         %{buildroot}%{_initddir}/snmpd
+%{__install} -m 660 stx.snmp.conf     %{buildroot}%{_datadir}/snmp/snmp.conf
+%{__install} -m 644 snmpd.service     %{buildroot}%{_sysconfdir}/systemd/system/snmpd.service
+
+%post
+if [ $1 -eq 1 ] ; then
+        # Initial installation
+        cp -f %{_datadir}/starlingx/stx.snmpd.conf   %{_sysconfdir}/snmp/snmpd.conf
+        chmod 640 %{_sysconfdir}/snmp/snmpd.conf
+        chmod 640 %{_sysconfdir}/snmp/snmptrapd.conf
+fi
+%{_bindir}/systemctl disable snmpd.service
+
+%files
+%{_datadir}/starlingx/stx.snmpd.conf
+%{_initddir}/snmpd
+%config(noreplace) %attr(0660,snmpd,snmpd) %{_datadir}/snmp/snmp.conf
+%{_sysconfdir}/systemd/system/snmpd.service
+

net-snmp-config/files/snmpd.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Simple Network Management Protocol (SNMP) Daemon.
+After=syslog.target network.target
+
+[Service]
+Type=notify
+Environment=OPTIONS="oamcontroller -u snmpd -Lsd -Lf /dev/null -p /var/run/snmpd.pid"
+EnvironmentFile=-/etc/sysconfig/snmpd
+ExecStart=/etc/init.d/snmpd start
+ExecStop=/etc/init.d/snmpd stop
+ExecReload=/bin/kill -HUP $MAINPID
+
+[Install]
+WantedBy=multi-user.target

net-snmp-config/files/stx.snmp.conf

@@ -0,0 +1,4 @@
+# Configuration file for the Net-SNMP applications  
+
+# Specifies the source address to be used by snmptrap application when sending SNMP traps
+clientaddr oamcontroller

net-snmp-config/files/stx.snmpd

@@ -0,0 +1,95 @@
+#! /bin/sh
+# /etc/init.d/snmpd: start snmp daemon.
+. /etc/init.d/functions
+
+# Linux Standard Base (LSB) Error Codes
+RETVAL=0
+GENERIC_ERROR=1
+INVALID_ARGS=2
+NOT_RUNNING=3
+NOT_INSTALLED=5
+
+#set environment variables
+export SNMPCONFPATH=/etc/snmp
+export MIBDIRS=/usr/share/snmp/mibs
+
+SNMPDOPTS='oamcontroller -u snmpd -LS6d -Lf /dev/null -p /var/run/snmpd.pid'
+PIDFILE=/var/run/snmpd.pid
+SNMPTRAPDCONFIG=${SNMPCONFPATH}/snmpdtrapd.conf
+SNMPDCONFIG=${SNMPCONFPATH}/snmpd.conf
+SNMPDNAME=snmpd 
+SNMPD="/usr/sbin/${SNMPDNAME}"
+
+test -x ${SNMPD} || exit ${NOT_INSTALLED}
+
+# Reads config file (will override defaults above)
+[ -r /etc/default/snmpd ] && . /etc/default/snmpd
+
+case "$1" in
+  start)
+	echo -n "Starting network management services: "
+	status ${SNMPD} >/dev/null
+        if [ $? -eq 0 ]; then
+		echo -n "is already running "
+		RETVAL=0
+	elif [ -f ${SNMPDCONFIG} ]; then
+		start-stop-daemon -o --start --quiet --name ${SNMPDNAME} --pidfile "$PIDFILE" \
+		--exec ${SNMPD} -- ${SNMPDOPTS}
+		RETVAL=$?
+	else
+		logger "${SNMPDCONFIG} is missing"
+		RETVAL=${GENERIC_ERROR}
+	fi
+	if [ ${RETVAL} -eq 0 ] ; then
+		pid=`pidof ${SNMPDNAME}`
+		echo "OK"
+		logger "${SNMPDNAME} (${pid})"
+	else
+		echo "FAIL"
+		RETVAL=${GENERIC_ERROR}
+	fi
+
+    ;;
+  stop)
+	status ${SNMPD} >/dev/null
+	if [ $? -ne 0 ]; then
+		echo "$SNMPDNAME is not running"
+		RETVAL=0
+	else 
+		echo -n "Stopping network management services "
+		killproc ${SNMPDNAME}
+		if [ -n "`pidof ${SNMPDNAME}`" ] ; then
+			logger "Going to SIGKILL ${SNMPDNAME}"
+        		killproc -KILL ${SNMPDNAME}
+		fi
+		/bin/rm -rf $PIDFILE
+		status ${SNMPD} >/dev/null
+        	if [ $? -ne 0 ]; then
+                	echo "Stopped"
+                	RETVAL=0
+        	else
+			echo "Failed"
+			RETVAL=${GENERIC_ERROR} 
+		fi
+	fi
+    ;;
+  status)
+	status ${SNMPD} >/dev/null 
+	RETVAL=$?
+	if  [ ! ${RETVAL} -eq 0 ] ; then
+		RETVAL=${NOT_RUNNING}
+	fi
+
+    ;;
+  restart|reload|force-reload)
+	$0 stop
+	sleep 1 
+	$0 start
+
+    ;;
+  *)
+	echo "Usage: /etc/init.d/snmpd {start|stop|status|restart|reload|force-reload}"
+	exit ${GENERIC_ERROR}
+esac
+
+exit $RETVAL

net-snmp-config/files/stx.snmpd.conf

@@ -0,0 +1,24 @@
+###########################################################################
+#
+# snmpd.conf
+#
+#   - created by the snmpconf configuration program
+#
+###########################################################################
+#           incl/excl subtree                          mask
+view all    included  .1                               80
+
+sysDescr ?
+sysObjectID  1.3.6.1.4.1.731.3
+sysContact ?
+sysName ?
+sysLocation ? 
+sysServices 72
+
+[snmp] clientaddr oamcontroller
+dlmod cgtsAgentPlugin /usr/lib64/libcgtsAgentPlugin.so.1
+dlmod snmpAuditPlugin /usr/lib64/libsnmpAuditPlugin.so.1
+
+# Insert the snmpAudit hander into specific sections of the mib tree
+injectHandler snmpAudit null
+injectHandler snmpAudit bulk_to_next