(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/settings.py b/tcp_tests/settings.py
index 5ec518d..f451eaf 100644
--- a/tcp_tests/settings.py
+++ b/tcp_tests/settings.py
@@ -29,6 +29,9 @@
     'TIMESTAT_PATH_YAML', os.path.join(
         LOGS_DIR, 'timestat_{}.yaml'.format(time.strftime("%Y%m%d"))))
 
+VIRTUAL_ENV = os.environ.get("VIRTUAL_ENV", None)
+ENV_NAME = os.environ.get("ENV_NAME", None)
+
 LAB_CONFIG_NAME = os.environ.get('LAB_CONFIG_NAME', 'mk22-lab-basic')
 #LAB_CONFIGS_NAME = os.environ.get('LAB_NAME', 'mk22-lab-advanced')