Merge branch 'testing2' into 'master'

reverted back glances and gitlabci

See merge request surya/devops-workshop!2

setupJenkins

 #!/bin/bash
 sudo apt update
-sudo apt install openjdk-8-jdk wget gnupg docker docker-compose
+sudo apt install openjdk-11-jdk wget gnupg docker docker-compose
 
 wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -
 sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'