Added txpool family to geth apis. Sorted geth cmd options

[jcortejoso]

Description

Added the api family txpool (doc) needed by Blockscout.

Tested

The method works locally. Not tested yet deploying using helm

Other changes

Sorted the cmd options of the geth command to ease the changes between sections

Related issues

• Fixes #[issue number here]

Backwards compatibility

The change should not affect compatibility in any way.

[jcortejoso]

Currently Blockscout Indexer shows this error due to the lack of this API:

iex(1)> 2019-10-24T13:37:19.648 application=indexer fetcher=pending_transaction [error] pending transaction fetcher task exited due to {{:case_clause, {:error, %{code: -32601, message: "The method txpool_content does not exist/is not available"}}}, [{Indexer.Fetcher.PendingTransaction, :task, 1, [file: 'lib/indexer/fetcher/pending_transaction.ex', line: 120]}, {Task.Supervised, :invoke_mfa, 2, [file: 'lib/task/supervised.ex', line: 90]}, {Task.Supervised, :reply, 5, [file: 'lib/task/supervised.ex', line: 35]}, {:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 249]}]}.  Rescheduling.
iex(1)> 2019-10-24T13:37:20.651 fetcher=pending_transaction [error] Task #PID<0.9756.2> started from Indexer.Fetcher.PendingTransaction terminating
** (CaseClauseError) no case clause matching: {:error, %{code: -32601, message: "The method txpool_content does not exist/is not available"}}
    (indexer) lib/indexer/fetcher/pending_transaction.ex:120: Indexer.Fetcher.PendingTransaction.task/1
    (elixir) lib/task/supervised.ex:90: Task.Supervised.invoke_mfa/2
    (elixir) lib/task/supervised.ex:35: Task.Supervised.reply/5
    (stdlib) proc_lib.erl:249: :proc_lib.init_p_do_apply/3
Function: #Function<2.56896065/0 in Indexer.Fetcher.PendingTransaction.handle_info/2>
    Args: []

[codecov]

Codecov Report

Merging #1462 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1462   +/-   ##
=======================================
  Coverage   73.74%   73.74%           
=======================================
  Files         277      277           
  Lines        7420     7420           
  Branches      660      660           
=======================================
  Hits         5472     5472           
  Misses       1836     1836           
  Partials      112      112

Flag	Coverage Δ
#mobile	73.74% <ø> (ø)	⬆️

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