(WIP) Use dynamic IPv4 network pools for deploy clusters (#18)

*     Use dynamic IPv4 network pools for deploy clusters

    - Use 'config' object as an additional jinja option to load templates
    - Use 'address_pools' from 'config' object in
      virtual-mcp11-ovs and virtual-mcp11-dvr
    - Fill 'address_pools' in 'config' object from fuel-devops manager

*     Use dynamic IPv4 network pools for deploy clusters

    - Use 'config' object as an additional jinja option to load templates
    - Use 'address_pools' from 'config' object in
      virtual-mcp11-ovs and virtual-mcp11-dvr
    - Fill 'address_pools' in 'config' object from fuel-devops manager

* return removed 'test_install_k8s'

* Use 'sed' to replace IP addresses in the models to pre-generated

also, two new environment variables avaliable for mcp11-ovs/dvr:
- SALT_MODELS_REPOSITORY
- SALT_MODELS_COMMIT

* remove temporary env_config.py.bak
diff --git a/tcp_tests/templates/underlay/virtual-mcp11-dvr--user-data-cfg01.yaml b/tcp_tests/templates/underlay/virtual-mcp11-dvr--user-data-cfg01.yaml
index 443e50c..45ad5cf 100644
--- a/tcp_tests/templates/underlay/virtual-mcp11-dvr--user-data-cfg01.yaml
+++ b/tcp_tests/templates/underlay/virtual-mcp11-dvr--user-data-cfg01.yaml
@@ -41,6 +41,26 @@
    - swapon /swapfile
    - echo "/swapfile   none    swap    defaults    0   0" >> /etc/fstab
 
+   ############## TCP Cloud cfg01 node ##################
+   #- sleep 120
+   - echo "Preparing base OS"
+
+   - echo "172.18.248.114    jenkins.mcp.mirantis.net  gerrit.mcp.mirantis.net" >> /etc/hosts;
+   - echo "185.135.196.10    apt-mk.mirantis.com" >> /etc/hosts;
+   - echo "nameserver 172.18.208.44 >> /etc/resolv.conf;
+   - echo "nameserver 8.8.8.8 >> /etc/resolv.conf;
+   - which wget >/dev/null || (apt-get update; apt-get install -y wget);
+   - echo "deb [arch=amd64] http://apt-mk.mirantis.com/xenial nightly salt extra" > /etc/apt/sources.list.d/mcp_salt.list;
+   - wget -O - http://apt-mk.mirantis.com/public.gpg | apt-key add -;
+   - echo "deb http://repo.saltstack.com/apt/ubuntu/16.04/amd64/2016.3 xenial main" > /etc/apt/sources.list.d/saltstack.list;
+   - wget -O - https://repo.saltstack.com/apt/ubuntu/16.04/amd64/2016.3/SALTSTACK-GPG-KEY.pub | apt-key add -;
+
+   - apt-get clean
+   - apt-get update
+
+   # Install common packages
+   - eatmydata apt-get install -y python-pip git curl tmux byobu iputils-ping traceroute htop tree
+
    ########################################################
    # Node is ready, allow SSH access
    - echo "Allow SSH access ..."