'Makes REST API call and retrieves projects based on tenant UUID.
:param tenant_name: Name of the tenant
:returns: List of project UUIDs in JSON response payload'

def project_list(self, tenant_name):

    tenant_obj = tenant.Tenant(self.ipaddr, self.port)
    tenant_uri = tenant_obj.tenant_query(tenant_name)
    (s, h) = common.service_json_request(self.ipaddr, self.port, 'GET', Project.URI_PROJECT_LIST.format(tenant_uri), None)
    o = common.json_decode(s)
    if ('project' in o):
        return common.get_list(o, 'project')
    return []
