New feature: Show data in modules

[tuxmea]

Request

As a Puppet admin I want to be able to see the module data in case that I select a key with a module name

Solution

Within HDM -> environments -> node -> Key

Check if the selected key first part of the name is a module name by:

• reading the environment.conf modulepath setting (use modules as default, multiple entries are separated by colon :, can also be absolute path)
  • Example:

    modulepath = site-modules:modules:/etc/puppetlabs/puppet/modules:../global
    

  • Default:

    modulepath = modules:$basemodulepath
    

    Basemodulepath: Puppet.settings('basemodulepath')
    Default:

    basemodulepath = /etc/puppetlabs/code/modules:/opt/puppetlabs/puppet/modules
    

• parse the modulepath directories in order for a directory with the same name
• if the directory exists
  • check for hiera.yaml inside the directory
  • if the hiera.yaml file exists
    • show the module button
  • if not
    • dont show the module button
• if not
  • dont show the module button

If module data exist, a button module will show up next to the key.

Now HDM switches into module data view.
There should be a button environment which leads back to the environment data (ideally the one where we switched to module data view).

Within the key list, only module data are shown.
The hiera data directory/file structured is build in the same way as we do it now with environment data.
When selecting a key, one sees the same view as in environment data.

[tuxmea]

Problem: when and which module data should be shown?

A module can have many parameters and hiera data.
We can either say to show module defaults only if the module data are overwritten in environment data.

Or:

we parse all modules and show all module data.
But this will be a huge list of data to show and definitely impact performance.

[tuxmea]

Related to #299

[tuxmea]

We onöly show module data as defaults if a module key is set in global or env hieradata