Update password_access_token_request.rb to match method parameters in doorkeeper 5.5

[CircumnavigatingFlatEarther]

doorkeeper 5.5 added a new parameter credentials to Doorkeeper::Oauth::PasswordAccessTokenRequest.initialize resulting in ArgumentError thrown. See this issue.

Once we match the parameters in the methods, we can set skip_client_authentication_for_password_grant to true and it works just fine.

[nbulaj]

Please do it in a backward compatible way. Maybe add a check like

if Doorkeeper::VERSION >= ... 
  def initiaize(...)
else
  def initialize(........)
 end

[CircumnavigatingFlatEarther]

Travis-ci.org went offline just yesterday and we don't currently have a CI for this gem.

I have tested successfully this branch locally both with Doorkeeper >= 5.5.1 and Doorkeeper 5.5.0.

[jmortlock]

Any updates on getting this merged / released? Seems to be an issue a few people are hitting and it would be nice to be able to update to the latest doorkeeper.

[Antiarchitect]

Also hit this issue.

[jhass]

Can we get a release for this please? :)