added testing for more distros

added workaround for ubuntu testing
remove Ubuntu 15.04 (vivid) from meta.yml because it's not LTS release and geerlingguy don't have docker container for it

.travis.yml

@@ -5,9 +5,11 @@ services: docker
 
 env:
   matrix:
+    - MOLECULE_DISTRO: centos6
     - MOLECULE_DISTRO: centos7
-    # - MOLECULE_DISTRO: ubuntu1804
-    # - MOLECULE_DISTRO: debian9
+    - MOLECULE_DISTRO: ubuntu1604
+    - MOLECULE_DISTRO: ubuntu1804
+    - MOLECULE_DISTRO: debian8
 
 install:
   # Install test dependencies.

meta/main.yml

@@ -24,8 +24,8 @@ galaxy_info:
         - 11.0
     - name: Ubuntu
       versions:
-        - vivid
         - xenial
+        - bionic
     - name: Debian
       versions:
         - jessie

molecule/default/playbook.yml

@@ -1,6 +1,26 @@
 ---
 - name: Converge
   hosts: all
+
+  # workaround: until geerlingguy/docker-ubuntu* containers doesn't have iproute2 package
+  pre_tasks:
+    - name: workaround for ansible_default_ipv4
+      block:
+        - name: update apt cache
+          apt:
+            update_cache: yes
+            cache_valid_time: 3600
+        - name: Ensure that iproute2 package is installed
+          apt:
+            name: iproute2
+        - name: Gather Facts network subset
+          setup:
+            gather_subset:
+              - network
+      when:
+        - ansible_distribution == 'Ubuntu'
+        - ansible_default_ipv4 is undefined
+
   roles:
     - role: ansible-consul