Test staging VM from backend

1. Upgrade pip, if needed
   sudo pip install --upgrade pip
2. Clone repo with committed code
   cd ~/Workspace
git clone https://github.com/{{repo_name}}/e-science.git {{test_dir}}
3. Install virtualenv, if needed
   #skip if already done
sudo pip install virtualenv
mkdir ~/.virtualenvs
4. Run commands inside virtualenv
   virtualenv --system-site-packages ~/.virtualenvs/orkaenv
. ~/.virtualenvs/orkaenv/bin/activate
#with deactivate from command line you exit the virtual env
5. Add functional VM in ~/.kamakirc
   [orka]
base_url = http://{{VM's IP}}
6. Install orka
   cd ~/Workspace/{{test_dir}}/orka
#important: run inside orka directory
sudo python setup.py install
7. Issue orka_create commands which will be executed on staging VM (contained in kamakirc orka base_url)
   #e.g.: create dspace vre
orka vre create {{vre_vm_name}} 2 2048 10 Standard escience.grnet.gr DSpace-5.3 --admin_password={{adminPassword}} --admin_email={{admin_email}}
8. In the end deactivate virtualenv
   deactivate