containers as functions (#1681)

PR adds a new executortype which supports running containers as functions. New CLI under functions is added to create container as functions.

Co-authored-by: Harsh Thakur <harshthakur9030@gmail.com>
Co-authored-by: Sanket Sudake <sanketsudake@gmail.com>

pkg/apis/core/v1/zz_generated.deepcopy.go

@@ -431,6 +431,11 @@ func (in *FunctionSpec) DeepCopyInto(out *FunctionSpec) {
 		*out = new(int)
 		**out = **in
 	}
+	if in.PodSpec != nil {
+		in, out := &in.PodSpec, &out.PodSpec
+		*out = new(corev1.PodSpec)
+		(*in).DeepCopyInto(*out)
+	}
 	return
 }