Update data format in tests and one run for all hosts in MongoDB cluster

in tests.

tests/group_vars/all.yml

@@ -1,6 +1,6 @@
 ---
 
-image_name: "ubuntu-upstart:18.04"
+image_name: "ubuntu:18.04"
 mongodb_package: mongodb-org
 mongodb_version: "4.0"
 mongodb_storage_dbpath: /var/lib/mongodb

tests/host_vars/mongo1.yml

@@ -2,4 +2,4 @@
 
 mongodb_master: true
 mongodb_replication_params:
-  - { host_name: "{{ hostvars[inventory_hostname].ansible_default_ipv4.address }}" }
+  - host_name: "{{ hostvars[inventory_hostname].ansible_default_ipv4.address }}"

tests/host_vars/mongo2.yml

@@ -1,4 +1,4 @@
 ---
 
 mongodb_replication_params:
-  - { host_name: "{{ hostvars[inventory_hostname].ansible_default_ipv4.address }}" }
+  - host_name: "{{ hostvars[inventory_hostname].ansible_default_ipv4.address }}"

tests/site.yml

@@ -87,11 +87,3 @@
   gather_facts: yes
   roles:
     - role: greendayonfire.mongodb
-      when: "'mongo_master' in group_names"
-
-- hosts: "{{ target | default('mongo') }}"
-  become: no
-  gather_facts: yes
-  roles:
-    - role: greendayonfire.mongodb
-      when: "'mongo_replicas' in group_names"