Mismatch between comment and implementation for default value of `clear_on_start`

[ljoss17]

Summary of Bug

The comment, in example config.toml, for clear_on_start says the default value is false, while the implementation has the default value set to true.

config.toml:

hermes/config.toml

Lines 53 to 54 in c34b354

	# Whether or not to clear packets on start. [Default: false]
	clear_on_start = true

Implementation:

hermes/crates/relayer/src/config.rs

Lines 189 to 207 in c34b354

	impl Default for ModeConfig {
	fn default() -> Self {
	Self {
	clients: Clients {
	enabled: true,
	refresh: true,
	misbehaviour: false,
	},
	connections: Connections { enabled: false },
	channels: Channels { enabled: false },
	packets: Packets {
	enabled: true,
	clear_interval: default::clear_packets_interval(),
	clear_on_start: true,
	tx_confirmation: default::tx_confirmation(),
	},
	}
	}
	}

Version

Latest commit at the moment, 20/10/22: c34b354

Acceptance Criteria

Comment and implementation default are the same

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