Gathered Environment variables (HTTP_PROXY/HTTPS_PROXY) may contain sensible information and should be obfuscated

On Pod definitions gathering, Operator should obfuscate particular environment variables (HTTP_PROXY and HTTPS_PROXY) from containers by default.

Pods from the control plane can have those variables injected from the cluster-wide proxy, and they may contain values as "user:password@[http://6.6.6.6:1234|http://6.6.6.6:1234/]".

1. In order to change deployments, scale down:
  * cluster-version-operator
  * cluster-monitoring-operator
  * prometheus-operator
2. Introduce a new environment variable on alertmanager-main statusSet with either or both HTTP_PROXY, HTTPS_PROXY. Any value but void will do.
4. Run insight-operator to get that pod definitions.
5. Check in the archive (usually config/pod/openshift-monitoring/alertmanager-main-0.json) that target environment variable(s) value is obfuscated.

...
"spec": {
    ...
    "containers": {
        ...
        "env": [
            {
                "name": "HTTP_PROXY"
                "value": "jdow:1qa2wd@[http://8.8.8.8:8080|http://8.8.8.8:8080/]"
            }
        ]
    }
}
...

...
"spec": {
    ...
    "containers": {
        ...
        "env": [
            {
                "name": "HTTP_PROXY"
                "value": "xxxxxxxxx" // Where x char number is the length of the obfuscated string
            }
        ]
    }
}
...