Move InCluster auth in kubernetes example config
Move InCluster auth in kubernetes example config

CA and Bearer Token are config of `kubernetes_sd_configs`, not the
`scrape_config`. Also updated misleading top-level comment and removed
unnecessary global config.

gottwald/prometheus,mtanda/prometheus,thachmai/prometheus,slok/prometheus,amorken/prometheus,gottwald/prometheus,eliothedeman/prometheus,prometheus/prometheus,mtanda/prometheus,agaoglu/prometheus,ton31337/prometheus,prometheus/prometheus,JavierZunzunegui/prometheus,Gouthamve/prometheus,Gouthamve/prometheus,Stackdriver/stackdriver-prometheus,JavierZunzunegui/prometheus,Stackdriver/stackdriver-prometheus,dsymonds/prometheus,GoogleCloudPlatform/prometheus,Conorbro/prometheus,kangwoo/prometheus,prometheus/prometheus,kzittritsch/prometheus,tomwilkie/prometheus,eliothedeman/prometheus,alileza/prometheus,SaltedMan/prometheus-annotated,iksaif/prometheus,gottwald/prometheus,AlekSi/prometheus,keegancsmith/prometheus,SaltedMan/prometheus-annotated,GoogleCloudPlatform/prometheus,keegancsmith/prometheus,tomwilkie/prometheus,kzittritsch/prometheus,ton31337/prometheus,adamron1/prometheus,msiebuhr/prometheus,wrouesnel/prometheus,amorken/prometheus,tattsun/prometheus,sudhi-vm/prometheus,thachmai/prometheus,Stackdriver/stackdriver-prometheus,dmilstein/prometheus,tattsun/prometheus,tattsun/prometheus,sudhi-vm/prometheus,keegancsmith/prometheus,alileza/prometheus,Colstuwjx/prometheus,eliothedeman/prometheus,yanghongkjxy/prometheus,alileza/prometheus,dln/prometheus,Conorbro/prometheus,tomwilkie/prometheus,tattsun/prometheus,kangwoo/prometheus,PrFalken/prometheus,SaltedMan/prometheus-annotated,keegancsmith/prometheus,adamron1/prometheus,slok/prometheus,datajet-io/prometheus,Conorbro/prometheus,dln/prometheus,AlekSi/prometheus,dmilstein/prometheus,Colstuwjx/prometheus,Stackdriver/stackdriver-prometheus,GoogleCloudPlatform/prometheus,slok/prometheus,alileza/prometheus,thachmai/prometheus,agaoglu/prometheus,msiebuhr/prometheus,wrouesnel/prometheus,iksaif/prometheus,Colstuwjx/prometheus,amorken/prometheus,Gouthamve/prometheus,brancz/prometheus,GoogleCloudPlatform/prometheus,kzittritsch/prometheus,ton31337/prometheus,prometheus/prometheus,thachmai/prometheus,datajet-io/prometheus,AlekSi/prometheus,msiebuhr/prometheus,PrFalken/prometheus,brancz/prometheus,dmilstein/prometheus,Conorbro/prometheus,dsymonds/prometheus,mtanda/prometheus,iksaif/prometheus,sudhi-vm/prometheus,PrFalken/prometheus,brancz/prometheus,wrouesnel/prometheus,Colstuwjx/prometheus,sudhi-vm/prometheus,AlekSi/prometheus,agaoglu/prometheus,agaoglu/prometheus,SaltedMan/prometheus-annotated,gottwald/prometheus,dln/prometheus,slok/prometheus,PrFalken/prometheus,Gouthamve/prometheus,yanghongkjxy/prometheus,brancz/prometheus,eliothedeman/prometheus,dsymonds/prometheus,tomwilkie/prometheus,msiebuhr/prometheus,prometheus/prometheus,datajet-io/prometheus,dsymonds/prometheus,iksaif/prometheus,datajet-io/prometheus,adamron1/prometheus,JavierZunzunegui/prometheus,yanghongkjxy/prometheus,GoogleCloudPlatform/prometheus,amorken/prometheus,kzittritsch/prometheus,ton31337/prometheus,kangwoo/prometheus,yanghongkjxy/prometheus,dmilstein/prometheus,alileza/prometheus,JavierZunzunegui/prometheus,adamron1/prometheus,dln/prometheus,keegancsmith/prometheus,wrouesnel/prometheus,kangwoo/prometheus,mtanda/prometheus