Preparing for RSpec4: Running specs fail with `shared_context_metadata_behavior = :apply_to_host_groups`

[tagliala]

For tracking purposes

rspec ./spec/money_spec.rb:355 # Money#fractional with infinite_precision stores in fractional unit as an integer regardless of what is passed into the constructor
rspec ./spec/money_spec.rb:305 # Money#fractional loading a serialized Money via YAML is a BigDecimal when using infinite_precision
rspec ./spec/money_spec.rb:113 # Money.new with infinite_precision given the initializing value is 1.50 should have the correct cents
rspec ./spec/money_spec.rb:430 # Money#round_to_nearest_cash_value returns a BigDecimal when infinite_precision is set
rspec ./spec/money_spec.rb:866 # Money#round with infinite_precision when using a specific rounding precision uses the provided rounding precision
rspec ./spec/money_spec.rb:192 # Money.from_amount does not round the given amount when infinite_precision is set
rspec ./spec/money_spec.rb:567 # Money#to_s with infinite_precision shows fractional cents
rspec ./spec/money_spec.rb:575 # Money#to_s with infinite_precision shows fractional if needed when :subunut_to_unit == 1
rspec ./spec/money/formatting_spec.rb:633 # Money formatting #format :rounded_infinite_precision option does not round fractional when set to false
rspec ./spec/money/formatting_spec.rb:623 # Money formatting #format :rounded_infinite_precision option does round fractional when set to true
rspec ./spec/money/formatting_spec.rb:654 # Money formatting #format :rounded_infinite_precision option with i18n = false does round fractional when set to true
rspec ./spec/money/formatting_spec.rb:681 # Money formatting #format :rounded_infinite_precision option with i18n = true does round fractional when set to true
rspec ./spec/money/formatting_spec.rb:174 # Money formatting #format when :subunit_to_unit is 1 displays a decimal part when infinite_precision is true

  # This option will default to `:apply_to_host_groups` in RSpec 4 (and will
  # have no way to turn it off -- the option exists only for backwards
  # compatibility in RSpec 3). It causes shared context metadata to be
  # inherited by the metadata hash of host groups and examples, rather than
  # triggering implicit auto-inclusion in groups with matching metadata.
  config.shared_context_metadata_behavior = :apply_to_host_groups

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The minimal reproduction command is:
rspec ./spec/money/formatting_spec.rb[1:5:5:3,1:5:28:1,1:5:28:2,1:5:28:3:1,1:5:28:4:1] ./spec/money_spec.rb[1:2:10:1:1,1:5:5,1:8:3:2,1:8:5:2,1:9:4,1:17:8:1,1:17:8:3,1:26:2:5:1]