Merge branch '91-prepare-release-4-2-0' into 'master'

Resolve "prepare release 4.2.0"

Closes #91

See merge request !94
4 jobs for 94-use-suts-with-beaker in 64 minutes and 4 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Syntax
passed #15433
syntax lint metadata_lint check:symlinks check:git_ignore check:dot_underscore check:test_file rubocop-Ruby 2.5.1-Puppet ~> 5.5

00:01:52

 
  Unit
passed #15434
parallel_spec-Ruby 2.5.1-Puppet ~> 5.5

00:01:09

 
  Acceptance Puppet5
passed #15435
puppet-tests
acceptance with puppet5

00:31:09

 
  Acceptance Puppet6
passed #15436
puppet-tests
acceptance with puppet6

00:29:52