cgoreceiver.process_filter.comms 参数不生效

[yanhongchang]

Describe the bug
在配置文件增加了屏蔽的进程comm，但是发现没有生效。

How to reproduce?
1、集群节点有filebeat日志采集进程。

2、配置文件修改：
process_filter:
# the length of a comm should be no more than 16
comms:
- "kindling-collec"
- "containerd"
- "dockerd"
- "containerd-shim"

如上配置增加了"filebeat"等进程comm，如下：
process_filter:
# the length of a comm should be no more than 16
comms:
- "kindling-collec"
- "containerd"
- "dockerd"
- "containerd-shim"
- "filebeat"
- "java"

然后 rollout restart ds/kindling-agent 重启所有pod

What did you expect to see?
如果生效，filebeat相关指标应该会不采集，看不到filebeat相关指标。

What did you see instead?
但是发现还是会有filebeat 服务相关指标：

Environment (please complete the following information)

• Kindling agent version -- v0.8.1
• Node OS version -- Alibaba Cloud Linux release 3
• Node Kernel version -- 5.10.23-4
• Kubernetes version 1.20.4