Adding versions for infra related docker images

1. latest tag replaced by version number for vnc server
2. added specific version for own_nginx image
3. version control improved in ansible roles accordingly

Solves OOM-1766

Issue-ID: OOM-1767

Change-Id: I147c56b46a419188099d8ed3e78fed68810893e2
Signed-off-by: Tomáš Levora <t.levora@partner.samsung.com>
diff --git a/ansible/group_vars/all.yml b/ansible/group_vars/all.yml
index f9d6726..d8fe37d 100755
--- a/ansible/group_vars/all.yml
+++ b/ansible/group_vars/all.yml
@@ -31,6 +31,9 @@
 # e.g. app_data_path: /opt/onap
 app_data_path:
 
+# Path for tarballs with images loaded on infrastructure server
+infra_images_path: "{{ app_data_path }}/offline_data/docker_images_infra"
+
 # Path for auxiliary data in target infra server.
 # Data from resource host defined by aux_resources_filename variable is placed to this directory.
 # Currently docker images in tar format are supported (see runtime_images parameter).