Travis: add Ansible 2.4 + 2.5

Author: HanXHX

.travis.yml

@@ -2,6 +2,18 @@ env:
   - PLATFORM='docker-debian-wheezy'  ANSIBLE_VERSION='ansible>=2.3,<2.4'
   - PLATFORM='docker-debian-jessie'  ANSIBLE_VERSION='ansible>=2.3,<2.4'
   - PLATFORM='docker-debian-stretch' ANSIBLE_VERSION='ansible>=2.3,<2.4'
+  - PLATFORM='docker-debian-wheezy'  ANSIBLE_VERSION='ansible>=2.4,<2.5'
+  - PLATFORM='docker-debian-jessie'  ANSIBLE_VERSION='ansible>=2.4,<2.5'
+  - PLATFORM='docker-debian-stretch' ANSIBLE_VERSION='ansible>=2.4,<2.5'
+  - PLATFORM='docker-debian-wheezy'  ANSIBLE_VERSION='ansible>=2.5b,<2.6'
+  - PLATFORM='docker-debian-jessie'  ANSIBLE_VERSION='ansible>=2.5b,<2.6'
+  - PLATFORM='docker-debian-stretch' ANSIBLE_VERSION='ansible>=2.5b,<2.6'
+
+matrix:
+  allow_failures:
+    - env: PLATFORM='docker-debian-wheezy'  ANSIBLE_VERSION='ansible>=2.5b,<2.6'
+    - env: PLATFORM='docker-debian-jessie'  ANSIBLE_VERSION='ansible>=2.5b,<2.6'
+    - env: PLATFORM='docker-debian-stretch' ANSIBLE_VERSION='ansible>=2.5b,<2.6'
 
 sudo: required