Adding remote write configs for Rabbitmq Metrics

[anphn-mtt]

Description

Added Remote/Write Configs for Rabbitmq metrics:
List of Metrics are on following page:

https://github.com/influxdata/telegraf/tree/master/plugins/inputs/rabbitmq

Metrics follow following formart

        ## Metrics follow following format:
        ## rabbitmq_exchange_messages_publish_in
        ## rabbitmq_exchange_messages_publish_in_rate
        ## rabbitmq_exchange_messages_publish_out
        ## rabbitmq_exchange_messages_publish_out_rate
        ## rabbitmq_node_disk_free
        ## rabbitmq_node_disk_free_limit
        ## rabbitmq_node_fd_used
        ## rabbitmq_node_gc_num_rate
        ## rabbitmq_node_mem_limit
        ## rabbitmq_node_mem_used
        ## rabbitmq_node_mnesia_disk_tx_count
        ## rabbitmq_node_mnesia_ram_tx_count
        ## rabbitmq_node_uptime
        ## rabbitmq_overview_clustering_listerners
        ## rabbitmq_overview_connections
        ## rabbitmq_overview_consumers
        ## rabbitmq_overview_exchanges
        ## rabbitmq_overview_messages_delivered
        ## rabbitmq_overview_messages_published
        ## rabbitmq_overview_messages_unacked
        ## rabbitmq_overview_queues
        ## rabbitmq_queue_consumers
        ## rabbitmq_queue_memory
        ## rabbitmq_queue_messages_deliver_rate
        ## rabbitmq_queue_messages_max_time
        ## rabbitmq_queue_messages_memory
        ## rabbitmq_queue_messages_publish_rate
        ## rabbitmq_queue_messages_unack
        ## rabbitmq_queue_slave_nodes

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Testing performed

• Redeploy fluentd and fluentd-events pods
• Confirm events, logs, and metrics are coming in