Add github.com/krishicks/yaml-patch to vendor

vendor/github.com/krishicks/yaml-patch/patch.go

@@ -0,0 +1,60 @@
+package yamlpatch
+
+import (
+	"fmt"
+
+	yaml "gopkg.in/yaml.v2"
+)
+
+// Patch is an ordered collection of operations.
+type Patch []Operation
+
+// DecodePatch decodes the passed YAML document as if it were an RFC 6902 patch
+func DecodePatch(bs []byte) (Patch, error) {
+	var p Patch
+
+	err := yaml.Unmarshal(bs, &p)
+	if err != nil {
+		return nil, err
+	}
+
+	return p, nil
+}
+
+// Apply returns a YAML document that has been mutated per the patch
+func (p Patch) Apply(doc []byte) ([]byte, error) {
+	var iface interface{}
+	err := yaml.Unmarshal(doc, &iface)
+	if err != nil {
+		return nil, fmt.Errorf("failed unmarshaling doc: %s\n\n%s", string(doc), err)
+	}
+
+	var c Container
+	c = NewNode(&iface).Container()
+
+	for _, op := range p {
+		pathfinder := NewPathFinder(c)
+		if op.Path.ContainsExtendedSyntax() {
+			paths := pathfinder.Find(string(op.Path))
+			if paths == nil {
+				return nil, fmt.Errorf("could not expand pointer: %s", op.Path)
+			}
+
+			for _, path := range paths {
+				newOp := op
+				newOp.Path = OpPath(path)
+				err = newOp.Perform(c)
+				if err != nil {
+					return nil, err
+				}
+			}
+		} else {
+			err = op.Perform(c)
+			if err != nil {
+				return nil, err
+			}
+		}
+	}
+
+	return yaml.Marshal(c)
+}