Mask user credentials in ps output of pbm-agent

[[email protected] ~]# pbm-agent version
Version: 1.0.0
Platform: linux/amd64
GitCommit: 485764f3b978fbbe8ba988e5754837a3f992e7a1
GitBranch: nocoord
BuildTime: 2019-09-20_09:48_UTC
GoVersion: go1.12.9
[[email protected] ~]# pbm-agent --mongodb-uri "mongodb://pbm:[email protected]:27017/admin" &
[1] 11544
[[email protected] ~]# pbm agent is listening for the commands
[[email protected] ~]# ps aux|grep pbm-agen[t]
root 11544 0.0 0.0 327708 9408 ? Sl 13:01 0:00 pbm-agent --mongodb-uri mongodb://pbm:[email protected]:27017/admin