splunk_login_successful? helper method fails to send auth info to splunkd

[haidangwa]

👻 Brief Description

#splunk_login_successful? helper method contains an interpolation error resulting in the static string node.run_state['splunk_auth_info'] being passed to #splunk_cmd instead of the actual value of the run_state attribute.

         Mixlib::ShellOut::CommandTimeout
         --------------------------------
         Command timed out after 600s:
         Command exceeded allowed execution time, process terminated
         ---- Begin output of su - splunk -c '/opt/splunk/bin/splunk login -auth node.run_state['splunk_auth_info']' ----
         STDOUT: 
         STDERR: Session terminated, killing shell... ...killed.
         ---- End output of su - splunk -c '/opt/splunk/bin/splunk login -auth node.run_state['splunk_auth_info']' ----
         Ran su - splunk -c '/opt/splunk/bin/splunk login -auth node.run_state['splunk_auth_info']' returned 
         
         Cookbook Trace: (most recent call first)
         ----------------------------------------
           /tmp/kitchen/cache/cookbooks/chef-splunk/libraries/helpers.rb:113:in `splunk_login_successful?'
           /tmp/kitchen/cache/cookbooks/chef-splunk/recipes/setup_auth.rb:33:in `block in from_file'
           /tmp/kitchen/cache/cookbooks/chef-splunk/recipes/setup_auth.rb:32:in `from_file'
           /tmp/kitchen/cache/cookbooks/chef-splunk/recipes/service.rb:50:in `from_file'
           /tmp/kitchen/cache/cookbooks/chef-splunk/recipes/server.rb:23:in `from_file'
           /tmp/kitchen/cache/cookbooks/chef-splunk/recipes/default.rb:29:in `from_file'

🥞 Cookbook version

7.1.0

Steps To Reproduce

Steps to reproduce the behavior:
Execute the chef-splunk::default recipe in a run list

🚓 Expected behavior

the splunkd auth info should be valid and be able to authenticate with splunkd