Use apiextension v1

- upgrade from apiextension v1beta1 to v1
 - generate yaml manifest for crd intead of applying it at runtime
  - users will have to apply the manifest with kubectl
 - kg and kgctl log an error if the crd is not present
 - now validation should actually work

Signed-off-by: leonnicolas <leonloechner@gmx.de>

vendor/github.com/gobuffalo/flect/lower_upper.go

@@ -0,0 +1,13 @@
+package flect
+
+import "strings"
+
+// ToUpper is a convience wrapper for strings.ToUpper
+func (i Ident) ToUpper() Ident {
+	return New(strings.ToUpper(i.Original))
+}
+
+// ToLower is a convience wrapper for strings.ToLower
+func (i Ident) ToLower() Ident {
+	return New(strings.ToLower(i.Original))
+}