feat: Try relaunching parity-ethereum node if it's not connecting after 15s (#543)
* Clean some code * Restart node after 15s * Remove console.lgo * Update comment * Remove useless arg * remove hasCalledInitParityEthereum
* Clean some code * Restart node after 15s * Remove console.lgo * Update comment * Remove useless arg * remove hasCalledInitParityEthereum