updates the test case expect { Rake::Task['litmus:provision'].invoke('docker', 'centos:7') }.to output(expected_output).to_stdout to expect { Rake::Task['litmus:provision'].invoke('docker', 'centos:7') }.to output(/{#{expected_output}/).to_stdout as these tests were wrongly showing as failures.
updates the test case
expect { Rake::Task['litmus:provision'].invoke('docker', 'centos:7') }.to output(expected_output).to_stdout
toexpect { Rake::Task['litmus:provision'].invoke('docker', 'centos:7') }.to output(/{#{expected_output}/).to_stdout
as these tests were wrongly showing as failures.