Ignore the 'combine' key in matching rules

[acarpe]

Verifing a pact produced by pact-jvm in V3 format it fails with this error:

pact-support-1.8.0/lib/pact/matching_rules/v3/merge.rb:124:in `block (2 levels) in log_ignored_rules': undefined method `any?' for "AND":String (NoMethodError)

it fails because the matching rules contain the combine key

      "matchers": [ { "match": "type" } ],
      "combine": "AND"
}```

in order to make it works again I remove the `combine` key from the hash because it is not relevant to log the unsupported matcher

[bethesque]

I have fixed this in a different way in cd52108

[bethesque]

Released in 1.8.1 of pact-support.

[bethesque]

It is quite relevant to log the unsupported matcher, because the rules that the consumer has written are not being applied. It's important to know that.