Check managed php version by OS - Fixes #9

vars/Debian-8.yml

@@ -1 +1,5 @@
 php_default_version: '5.6'
+php_managed_versions:
+  - '5.6'
+  - '7.0'
+  - '7.1'

vars/Debian-9.yml

@@ -1 +1,4 @@
 php_default_version: '7.0'
+php_managed_versions:
+  - '7.0'
+  - '7.1'

vars/main.yml

@@ -7,8 +7,3 @@ php_packages:
   - '{{ php_apt_prefix }}mcrypt'
   - '{{ php_mysql_package }}'
   - '{{ php_apt_prefix }}intl'
-
-php_managed_versions:
-  - '5.6'
-  - '7.0'
-  - '7.1'