def METHOD_NAME():
    """
    Fetches the CSRs
    Returns:
        dict: Dictionary with node as keys and CSRs as values
            e.g:{
                'control-plane-1': ['csr-6hx8z'],
                'compute-2': ['csr-blz2n'],
                'compute-0': ['csr-p46bz'],
                'control-plane-2': ['csr-tzhn5'],
                'control-plane-0': ['csr-wm4g5']
                }
    """
    csr_nodes = {}
    csr_data = get_csr_resource().get()
    for item in csr_data["items"]:
        node = item["spec"]["username"].split(":")[-1]
        if node not in csr_nodes.keys():
            csr_nodes[node] = []
        csr_name = item["metadata"]["name"]
        csr_nodes[node].append(csr_name)
    return csr_nodes