OCPBUGS-54740#Add --show-template-functions to cluster-compare plugin options

Author: amolnar-rh

Diff for: modules/cluster-compare-reference-args.adoc

@@ -58,6 +58,9 @@ You must use a file path for the target template that is relative to the `metada
 | `--show-managed-fields` 
 | Specify `true` to include managed fields in the comparison.
 
+| `--show-template-functions`
+| Displays available template functions.
+
 | `-v`, `--verbose` 
 | Increases the verbosity of the plugin output.
 

Diff for: modules/cluster-compare-templating-reference.adoc

@@ -0,0 +1,42 @@
+// Module included in the following assemblies:
+
+// *scalability_and_performance/cluster-compare/creating-a-reference-configuration.adoc
+
+:_mod-docs-content-type: REFERENCE
+
+[id="cluster-compare-templating-reference_{context}"]
+= Reference template functions
+
+The `cluster-compare` plugin supports all `sprig` library functions, except for the `env` and `expandenv` functions.
+See _Additional resources_ for the list of `sprig` library functions.
+
+The following content describes the additional template functions for the `cluster-compare` plugin. 
+
+.Additional cluster-compare template functions
+[options="header"]
+[cols="2a,3a"]
+|====
+| Function | Description
+
+|`fromJson`
+|Parses the incoming string as a structured JSON object.
+
+|`fromJsonArray`
+|Parses the incoming string as a structured JSON array.
+
+|`fromYaml`
+|Parses the incoming string as a structured YAML object.
+
+|`fromYamlArray`
+|Parses the incoming string as a structured YAML array.
+
+|`toJson`
+|Renders incoming data as JSON while preserving object types.
+
+|`toToml`
+|Parses the incoming string as structured TOML data.
+
+|`toYaml`
+|Renders incoming data as YAML while preserving object types.
+
+|====

Diff for: scalability_and_performance/cluster-compare/creating-a-reference-configuration.adoc

@@ -14,6 +14,13 @@ include::modules/cluster-compare-template-groupings.adoc[leveloffset=+1]
 
 include::modules/cluster-compare-templating.adoc[leveloffset=+1]
 
+include::modules/cluster-compare-templating-reference.adoc[leveloffset=+2]
+
+[role="_additional-resources"]
+.Additional resources
+
+* link:https://masterminds.github.io/sprig/[Sprig Function Documentation]
+
 include::modules/cluster-compare-exclude-metadata.adoc[leveloffset=+1]
 
 include::modules/cluster-compare-configure-inline-diff.adoc[leveloffset=+1]