Add --auto-gen-config param generation for remaining EnforcedStyle.

Except in SignalException where there are three possible values for
EnforcedStyle. This is more difficult to support when it comes to
generation of rubocop-todo.yml, although not impossible.
Add missing code for Max parameters in rubocop-todo.yml.

ParameterLists had been forgotten in an earlier commit, and
method_length_spec.rb was missing an expect call.
Generate parameters behaving like Max in rubocop-todo.yml.

RegexpLiteral: MaxSlashes
NumericLiterals: MinDigits
WordArray: MinSize
Generate parameters behaving like EnforcedStyle in rubocop-todo.yml.

EndAlignment: AlignWith
CaseIndentation: IndentWhenRelativeTo
DotPosition: Style
Merge pull request #699 from jonas054/rubocop_todo_step_2

More parameter generation for rubocop-todo.yml