testcase fails on RHEL 8 for v5.5.2

Puppet Version: 5.5.2**
Puppet Server Version: 5.5.2
OS Name/Version: Red Hat Enterprise Linux 8.0 (Ootpa)

Describe your issue in as much detail as possible…

testcase Failures:

  1) Puppet::Type::User::ProviderUseradd#check_valid_shell should raise an error if the shell is not executable
     Failure/Error: expect { provider.check_valid_shell }.to raise_error(Puppet::Error, /Shell LICENSE must be executable/)
       expected Puppet::Error with message matching /Shell LICENSE must be executable/ but nothing was raised
     # ./spec/unit/provider/user/useradd_spec.rb:602:in `block (3 levels) in <top (required)>'

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2619 examples, 1 failure, 10 pending

Failed examples:

rspec ./spec/unit/provider/user/useradd_spec.rb:599 # Puppet::Type::User::ProviderUseradd#check_valid_shell should raise an error if the shell is not executable

Describe steps to reproduce…

git clone git://github.com/puppetlabs/puppet
cd puppet
git checkout 5.5.2
bundle install --path .bundle/gems/

bundle exec rspec "spec/unit/provider"

Desired Behavior:

testcase passes without errors

Actual Behavior:

testcase fails with shell validation error on RHEL 8

Please take a moment and attach any relevant log output and/or manifests. This will help us immensely when troubleshooting the issue.

Examples:
Run puppet agent with --test --trace --debug

Relevant sections of /var/log/puppetlabs/puppetserver/puppetserver.log or any applicable logs from the same directory.

For more detailed information turn up the server logs by upping the log level in the server's logback.xml

Relevant sections of configurations files (puppet.conf, hiera.conf, Server's conf.d, defaults/sysconfig)

For memory issues with server heap dumps are also helpful.