chore: add hcl replace

.changelog/3522.txt

@@ -0,0 +1,3 @@
+```release-note:improvement
+core: Adds string `replace` function for HCL configs
+```

pkg/config/funcs/doc.go

@@ -50,6 +50,7 @@ func Docs() map[string]string {
 		"range":           "generate a list of numbers",
 		"regex":           "match the given string against the given regular expression pattern, returning captures if defined",
 		"regexall":        "same as regex but look for all matches of the given pattern rather than just the first",
+		"replace":         "`replace` searches a given string for another given substring, and replaces each occurrence with a given replacement string.",
 		"reverse":         "reverse the order of the elements in the list",
 		"selectormatch":   "applies a selector to a map and returns true if the selector matches",
 		"selectorlookup":  "applies a map of selectors to a map of labels. The value for the first matching selector is returned. If none match, the default is returned.",

pkg/config/funcs/stdlib.go

@@ -40,6 +40,7 @@ func Stdlib() map[string]function.Function {
 		"range":           stdlib.RangeFunc,
 		"regex":           stdlib.RegexFunc,
 		"regexall":        stdlib.RegexAllFunc,
+		"replace":         stdlib.ReplaceFunc,
 		"reverse":         stdlib.ReverseListFunc,
 		"setintersection": stdlib.SetIntersectionFunc,
 		"setproduct":      stdlib.SetProductFunc,

website/content/partials/funcs.mdx

@@ -382,6 +382,14 @@ regexall(pattern, string) list of dynamic
 
 same as regex but look for all matches of the given pattern rather than just the first
 
+## `replace`
+
+```hcl
+replace(str, substr, replace) string
+```
+
+`replace` searches a given string for another given substring, and replaces each occurrence with a given replacement string.
+
 ## `reverse`
 
 ```hcl