Variable substitution and custom JMESPath function changes.

[kacejot]

kyverno/kyverno#1772 implements two new things:

1. This one is tiny. New variable is available: {{@}} - current value that is being processed;
2. List of new function that are available for using in JMESPath. The list is available in PR in functions.go file

[kacejot]

List of new functions:

compare(a string, b string)
equal_fold(a string, b string)
replace(str string, old string, new string, n number)
replace_all(str string, old string, new string)
to_upper(str string)
to_lower(str string)
trim(str string, cutset string)
split(str string, separator string)
regex_replace_all(regex string, str string/number, new string/number)
regex_replace_all_literal(regex string, str string/number, new string/number)
regex_match(regex string, str string/number)

[kacejot]

I have updated function list (removed equals because it has same behavior as == in JMESPath)

[chipzoller]

@realshuting is this slated for 1.3.6? Please confirm.

[realshuting]

@realshuting is this slated for 1.3.6? Please confirm.

Yes.