Change ServiceMonitor for fluent-bit - port and matchLabels

[kasia-kujawa]

Description

Fixes #1187

Changes according to current definition of fluent-bit service:

$ kubectl describe svc collection-fluent-bit
Name:              collection-fluent-bit
Namespace:         sumologic
Labels:            app.kubernetes.io/instance=collection
                   app.kubernetes.io/managed-by=Helm
                   app.kubernetes.io/name=fluent-bit
                   app.kubernetes.io/version=1.6.3
                   helm.sh/chart=fluent-bit-0.7.4
Annotations:       meta.helm.sh/release-name: collection
                   meta.helm.sh/release-namespace: sumologic
Selector:          app.kubernetes.io/instance=collection,app.kubernetes.io/name=fluent-bit
Type:              ClusterIP
IP:                10.152.183.87
Port:              http  2020/TCP
TargetPort:        http/TCP
Endpoints:         10.1.57.18:2020
Session Affinity:  None
Events:            <none>

Testing performed

• ci/build.sh
• Redeploy fluentd and fluentd-events pods
• Confirm events, logs, and metrics are coming in

[sumo-drosiek]

Thanks