create Grafana dashboards by API

Grafana Import Dashboard.py

Don't use the API as described in http://docs.grafana.org/http_api/dashboard/

Use the undocumented `import` interface
* remove .dashboard.id
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data = getDashboard(DA_API_URL, uid, daAuthHeader)

def createDashboard(apiUrl, uid, authHeader, data):
    del data['meta']
    data['overwrite'] = True
    data['folderId'] = 0
    data['inputs'] = []
    data['dashboard']['id'] = None
    #print json.dumps(data, indent=4)
    return requests.post(apiUrl + '/dashboards/import' , headers=authHeader, json=data)
    
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