resolve Ruby 2.7 "Using the last argument as keyword parameters is deprecated" warning

In quite a few support tickets, I have noticed the following warning in relation to r10k and code manager:

warning: Using the last argument as keyword parameters is deprecated

It does seem to be only cosmetic and doesn't cause any issues with deployment etc but it would be nice to get this resolved to remove noise from logs and confusion for customers

Some quick investigation would seem that this is a problem with ruby 2.7, in particular, Ruby 2.7 deprecated the use of hashes in the last argument of a method call.