If the network is in Openstack it is needed to be deployed

#### Reviewers
@jframos @jesuspg

#### Description
if the network exists in Openstack, the paas manager does not have to deploy it
https://jira.tid.es/browse/CLAUDIA-4453
#### Test
Tested locally agains experimentacion testbed
Information

Anyway "Error to obtain the network infromation" is a recurrent text that you could define in a variable...