Chore: Move to centos8-builder

Chore: Move to centos8-builder

jjb/dcaegen2/dcaegen2-collectors-hv-ves.yaml
jjb/dcaegen2/dcaegen2-collectors-restconf.yaml
jjb/dcaegen2/dcaegen2-collectors-snmptrap.yaml
jjb/dcaegen2/dcaegen2-collectors-ves.yaml
jjb/dcaegen2/dcaegen2-collectors.yaml
jjb/dcaegen2/dcaegen2-deployments.yaml
jjb/dcaegen2/dcaegen2-platform-mod2-helm-generator.yaml
jjb/dcaegen2/dcaegen2-platform-ves-openapi-manager.yaml
jjb/dcaegen2/dcaegen2-platform.yaml
jjb/dcaegen2/dcaegen2-services-datalake-handler.yaml
jjb/dcaegen2/dcaegen2-services-heartbeat.yaml
jjb/dcaegen2/dcaegen2-services-mapper.yaml
jjb/dcaegen2/dcaegen2-services-pm-mapper.yaml
jjb/dcaegen2/dcaegen2-services-prh.yaml
jjb/dcaegen2/dcaegen2-services-sdk.yaml

Issue-ID: CIMAN-33
Signed-off-by: Bengt Thuree <bthuree@linuxfoundation.org>
Change-Id: I7f8db2af5e72de4b4774d91be33d94b4f58ca5e5
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>