add conditional logic to puppet version used

Author: jhongturney

octocatalog-diff.gemspec

@@ -29,20 +29,28 @@ EOF
   s.add_runtime_dependency 'hashdiff', '>= 0.3.0'
   s.add_runtime_dependency 'parallel', '>= 1.12.0'
   s.add_runtime_dependency 'rugged', '>= 0.25.0b2'
+  if puppet_version == "4.10.10"
+    s.add_runtime_dependency 'puppet', '4.10.10'
+    s.add_development_dependency 'puppet', '4.10.10'
+  elsif puppet_version == "5.5.22"
+    s.add_runtime_dependency 'puppet', '5.5.22'
+    s.add_development_dependency 'puppet', '5.5.22'
+  elsif puppet_version == "6.18.0"
+    s.add_runtime_dependency 'puppet', '6.18.0'
+    s.add_development_dependency 'puppet', '6.18.0'
+  elsif puppet_version == "7.3.0"
+    s.add_runtime_dependency 'puppet', '7.3.0'
+    s.add_development_dependency 'puppet', '7.3.0'
+  end
 
   s.add_development_dependency 'rspec', '~> 3.4.0'
   s.add_development_dependency 'rake', '12.3.3'
   s.add_development_dependency 'parallel_tests', '2.7.1'
   s.add_development_dependency 'rspec-retry', '0.5.0'
-
   s.add_development_dependency 'rubocop', '= 0.49.0'
-
   s.add_development_dependency 'simplecov', '~> 0.14.1'
   s.add_development_dependency 'simplecov-erb', '~> 0.1.1'
 
-  puppet_version = ENV['PUPPET_VERSION'] || DEFAULT_PUPPET_VERSION
-  s.add_development_dependency 'puppet', "~> #{puppet_version}"
-
   puppet_v = Gem::Version.new(puppet_version)
   version_config = JSON.parse(File.read(File.join(File.dirname(__FILE__), 'config', 'puppet-versions.json')))
   version_config.each do |data|