Add configuration for stable/newton and ocata

See merge request !13

According to https://github.com/openstack-infra/nodepool/commit/f707d1ffdff947e3efc6ce866728cd6e5ba09fda ,
there is a new option in the diskimages section with a image age that should replace this configuration.

Fix Jenkins slaves communication

See merge request !12

Updating configuration to fix image generation

See merge request !11

This causes the CI dashboard to mistakenly separate UFCG OneView CI's
success and failures into two categories.

Fix name device interface eth1 -> ens3

See merge request !10

Update diskimages to be ubuntu-xenial

See merge request !9

Change blade configuration

See merge request !8

Added configuration for run backport patch stable/newton.

See merge request !7

Tested jenkins job

Major update at CI configuration including:
* general update at nodepool, jenkins and zuul configuration and scripts
* disable mirror configuration at slaves while we don't configure a proper mirror inside our lab 
* change deployment servers configuration
* obfuscate password from logs
* update provider configuration
* update DNS configuration
* add prefix to configuration files
* update network configuration
*  adding post build script to clean server profiles

See merge request !6

* Change NODEPOOL_STATIC_NAMESERVER property
* Update flavor name
* Disable subnet according to latest commits
* Introduce code to remove passwords from logs

* new location for hwinfo configuration files
* new post build task to obfuscate logs