Node attribute documentation missing required attributes and built-in node executor attributes

[pwonson]

Describe the bug The section on node attributes should contain and describe the basic node attributes, any reserved attributes, attributes used by each shipped executor.

Some of the basic attributes are on this page

node.nodename node.name node.hostname node.node-executor (missing)

This section should also have a short description of how the attributes can be used as variables by node steps and capture across all nodes by the global variable workflow step.

Source page https://docs.rundeck.com/docs/manual/05-nodes.html#attribute-name-spaces

[pwonson]

Also a link to the node enhancer with description -- dynamically add attributes