feat: add exec-plugin argument and environment support (#5316)

* feat: add exec-plugin argument and environment support

Previously, the documentation lead to think that this is working, but
it's not been implemented.

This PR is fixing this

Signed-off-by: Matthias Riegler <matthias.riegler@ankorstore.com>

* chore: disable linting for env var split

Signed-off-by: Matthias Riegler <matthias.riegler@ankorstore.com>

---------

Signed-off-by: Matthias Riegler <matthias.riegler@ankorstore.com>

kyaml/fn/runtime/runtimeutil/functiontypes.go

@@ -138,6 +138,12 @@ type FunctionSpec struct {
 
 type ExecSpec struct {
 	Path string `json:"path,omitempty" yaml:"path,omitempty"`
+
+	// Args is a slice of args that will be passed as arguments to script
+	Args []string `json:"args,omitempty" yaml:"args,omitempty"`
+
+	// Env is a slice of env string that will be exposed to container
+	Env []string `json:"envs,omitempty" yaml:"envs,omitempty"`
 }
 
 // ContainerSpec defines a spec for running a function as a container