Ansible issue: Jinja2 converting double quotes to single quotes

Command-line

ansible-playbook  -e "@test/values.json" -vvvv  ./test.yml

output.json

{
    "keepDoubleQuotes": [ {"name": "value"} ],
    "loseDoubleQuotes": [{'name2': 'value2nestedValue'}]
}

stdout

TASK: [test | dbg] ************************************************************ 
ok: [...] => {
    "item": "", 
    "keepDoubleQuotes": [
        {
            "name": "value"
        }
    ]
}

TASK: [test | dbg2] *********************************************************** 
ok: [...] => {
    "item": "", 
    "loseDoubleQuotes": [
        {
            "name2": "value2nestedValue"
        }
    ]
}

TASK: [test | template] ******************************************************* 
<...> ESTABLISH CONNECTION FOR USER: root on PORT 22 TO ...
<...> EXEC /bin/sh -c 'mkdir -p $HOME/.ansible/tmp/ansible-tmp-1398883576.25-216619941571149 && chmod a+rx $HOME/.ansible/tmp/ansible-tmp-1398883576.25-216619941571149 && echo $HOME/.ansible/tmp/ansible-tmp-1398883576.25-216619941571149'
<...> EXEC /bin/sh -c 'rc=0; [ -r "/var/tmp/output.json" ] || rc=2; [ -f "/var/tmp/output.json" ] || rc=1; [ -d "/var/tmp/output.json" ] && echo 3 && exit 0; (/usr/bin/md5sum /var/tmp/output.json 2>/dev/null) || (/sbin/md5sum -q /var/tmp/output.json 2>/dev/null) || (/usr/bin/digest -a md5 /var/tmp/output.json 2>/dev/null) || (/sbin/md5 -q /var/tmp/output.json 2>/dev/null) || (/usr/bin/md5 -n /var/tmp/output.json 2>/dev/null) || (/bin/md5 -q /var/tmp/output.json 2>/dev/null) || (/usr/bin/csum -h MD5 /var/tmp/output.json 2>/dev/null) || (/bin/csum -h MD5 /var/tmp/output.json 2>/dev/null) || (echo "${rc} /var/tmp/output.json")'
<...> PUT /tmp/tmpxv4m9e TO /home/vbce/.ansible/tmp/ansible-tmp-1398883576.25-216619941571149/source
<...> PUT /tmp/tmpaDveH7 TO /home/vbce/.ansible/tmp/ansible-tmp-1398883576.25-216619941571149/copy
<...> EXEC /bin/sh -c '/usr/bin/python /home/vbce/.ansible/tmp/ansible-tmp-1398883576.25-216619941571149/copy; rm -rf /home/vbce/.ansible/tmp/ansible-tmp-1398883576.25-216619941571149/ >/dev/null 2>&1'
changed: [...] => {"changed": true, "dest": "/var/tmp/output.json", "gid": 1501, "group": "voicebox", "item": "", "md5sum": "fc7c06b12fbf99827cda1fd2daab7387", "mode": "0644", "owner": "root", "secontext": "unconfined_u:object_r:user_home_t:s0", "size": 108, "src": "/home/vbce/.ansible/tmp/ansible-tmp-1398883576.25-216619941571149/source", "state": "file", "uid": 1503}

PLAY RECAP ******************************************************************** 
... : ok=4    changed=1    unreachable=0    failed=0   

test-tasks-main.yml

---
    - name: dbg
      debug: var=keepDoubleQuotes

    - name: dbg2
      debug: var=loseDoubleQuotes

    - name: template
      template: src="test.j2"
                dest="/var/tmp/output.json"
                

test-templates-test.j2

{
    "keepDoubleQuotes": {{ keepDoubleQuotes}},
    "loseDoubleQuotes": {{ loseDoubleQuotes}}
}

test-values.json

{
 keepDoubleQuotes: '[
    {"name": "value"}
    ]',
 "nestedVar": "nestedValue",
 loseDoubleQuotes: '[
    { "name2": "value2{{ nestedVar }}" }
    ]',
}

test.yml

---
# Playbook to test how Jinja2 handles quotes in nested variables
- name: test quotes
  hosts: all

  roles:
    - test