[monitor]fix can not collect cpu metrics in tencent centos (#164)

manager/src/main/resources/define/app/centos.yml

@@ -99,7 +99,7 @@ metrics:
       username: ^_^username^_^
       password: ^_^password^_^
       timeout: ^_^timeout^_^
-      script: "LANG=C lscpu | awk -F: '/Model name/ {print $2}';awk '/processor/{core++} END{print core}' /proc/cpuinfo;uptime | sed 's/,/ /g' | awk '{for(i=NF-2;i<=NF;i++)print $i }' | xargs;vmstat 1 1 | awk 'NR==3{print $11}';vmstat 1 1 | awk 'NR==3{print $12}';vmstat 1 1 | awk 'NR==3{print $15}'"
+      script: "LANG=C lscpu | awk -F: '/Model name/ {print $2}' | awk 'NR==1';awk '/processor/{core++} END{print core}' /proc/cpuinfo;uptime | sed 's/,/ /g' | awk '{for(i=NF-2;i<=NF;i++)print $i }' | xargs;vmstat 1 1 | awk 'NR==3{print $11}';vmstat 1 1 | awk 'NR==3{print $12}';vmstat 1 1 | awk 'NR==3{print $15}'"
       parseType: oneRow
 
   - name: memory
@@ -244,4 +244,4 @@ metrics:
       password: ^_^password^_^
       timeout: ^_^timeout^_^
       script: df -m | tail -n +2 | awk 'BEGIN{ print "filesystem used available usage mounted"} {print $1,$3,$4,$5,$6}'
-      parseType: multiRow
+      parseType: multiRow