message: Update kubevirt gating image to centos 8
diff: -FROM centos:7
  +FROM centos:8
  USER root
  @@ -6,7 +6,7 @@ RUN curl -sL https://rpm.nodesource.com/setup_10.x | bash - && \
  curl --silent --location https://dl.yarnpkg.com/rpm/yarn.repo | tee /etc/yum.repos.d/yarn.repo && \
  rpm --import https://dl.yarnpkg.com/rpm/pubkey.gpg
  -RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
  +RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
  RUN yum update -y && yum install -y \
  git \
  @@ -36,8 +36,3 @@ ENV GOROOT "/usr/local/go"
  ENV GOPATH "$HOME"
  ENV PATH "$GOPATH/bin:$GOROOT/bin:$PATH"
  -
  -RUN git clone https://github.com/openshift/console.git /tmp/console && \
  - cd /tmp/console && \
  - ./build.sh && \
  - chmod 777 -R /tmp/console/
  