Update CI to use 2.9.0 release and update Dockerfile to now use 18.04 (#4472)

* Update CI to use 2.9.0 release and update Dockerfile to now use 18.04

* Update CI to use 2.9.0 release and update Dockerfile to now use 18.04

* Update the kubectl bin

.gitlab-ci.yml

@@ -42,7 +42,7 @@ before_script:
   tags:
     - kubernetes
     - docker
-  image: quay.io/kubespray/kubespray:v2.8
+  image: quay.io/kubespray/kubespray:v2.9.0
 
 .docker_service: &docker_service
   services:

Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:18.04
 
 RUN mkdir /kubespray
 WORKDIR /kubespray
@@ -14,6 +14,5 @@ RUN  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add - &&
      && apt update -y && apt-get install docker-ce -y
 COPY . .
 RUN /usr/bin/python -m pip install pip -U && /usr/bin/python -m pip install -r tests/requirements.txt && python -m pip install -r requirements.txt
-RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.11.3/bin/linux/amd64/kubectl \
+RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.13.5/bin/linux/amd64/kubectl \
     && chmod a+x kubectl && cp kubectl /usr/local/bin/kubectl
-