roles:solr5:tasks Get and test solr cores instead of ignore=true

[JeGoi]

https://github.com/AtlasOfLivingAustralia/ala-install/blob/master/ansible/roles/solr5/tasks/main.yml#L100 ignore: true can be replace by:

- name: Get list of Solr current cores.
  uri:
    url: "{{ solr_base_url }}/solr/admin/cores"
    return_content: yes
  register: solr_current_cores
  check_mode: no
  tags:
    - solr5
    - solr5_create_cores

- name: Create SOLR cores if not here
  get_url: url="{{ solr_base_url }}/solr/admin/cores?action=CREATE&name={{ item }}&instanceDir={{data_dir}}/solr/data/{{ item }}&config=solrconfig.xml&dataDir=data" force=yes timeout=30 dest=/tmp/
  when: "item not in solr_current_cores.content"
  with_items:
    - "biocache"
    - "bie"
    - "bie-offline"
  tags:
    - solr5
    - solr5_create_cores

Yes it's more line but the tasks is cleaner isn't it:
Before:

TASK [solr5 : Create SOLR cores] ******************************************************************************************************************************************************************************
failed: [vm-021] (item=biocache) => {"changed": false, "dest": "/tmp/", "gid": 0, "group": "root", "item": "biocache", "mode": "01777", "msg": "Request failed", "owner": "root", "response": "HTTP Error 500: Server Error", "size": 4096, "state": "directory", "status_code": 500, "uid": 0, "url": "http://vm-021:8983/solr/admin/cores?action=CREATE&name=biocache&instanceDir=/data/solr/data/biocache&config=solrconfig.xml&dataDir=data"}
failed: [vm-021] (item=bie) => {"changed": false, "dest": "/tmp/", "gid": 0, "group": "root", "item": "bie", "mode": "01777", "msg": "Request failed", "owner": "root", "response": "HTTP Error 500: Server Error", "size": 4096, "state": "directory", "status_code": 500, "uid": 0, "url": "http://vm-021:8983/solr/admin/cores?action=CREATE&name=bie&instanceDir=/data/solr/data/bie&config=solrconfig.xml&dataDir=data"}
failed: [vm-021] (item=bie-offline) => {"changed": false, "dest": "/tmp/", "gid": 0, "group": "root", "item": "bie-offline", "mode": "01777", "msg": "Request failed", "owner": "root", "response": "HTTP Error 500: Server Error", "size": 4096, "state": "directory", "status_code": 500, "uid": 0, "url": "http://vm-021:8983/solr/admin/cores?action=CREATE&name=bie-offline&instanceDir=/data/solr/data/bie-offline&config=solrconfig.xml&dataDir=data"}
...ignoring

After:

TASK [solr5 :  Get list of Solr current cores.] **************************************************************************************************************************************************************
ok: [vm-021]

TASK [solr5 : Create SOLR cores if not here] ******************************************************************************************************************************************************************
skipping: [vm-021] => (item=biocache) 
skipping: [vm-021] => (item=bie) 
skipping: [vm-021] => (item=bie-offline)