feat(2450): add options to chart metadata

_proto/hapi/chart/metadata.proto

@@ -80,4 +80,7 @@ message Metadata {
 	// TillerVersion is a SemVer constraints on what version of Tiller is required.
 	// See SemVer ranges here: https://github.com/Masterminds/semver#basic-comparisons
 	string tillerVersion = 15;
+
+	// Options is an unstructured key value map for user to store arbitrary data.
+	map<string,string> options = 16;
 }

pkg/proto/hapi/chart/metadata.pb.go

@@ -96,6 +96,8 @@ type Metadata struct {
 	// TillerVersion is a SemVer constraints on what version of Tiller is required.
 	// See SemVer ranges here: https://github.com/Masterminds/semver#basic-comparisons
 	TillerVersion string `protobuf:"bytes,15,opt,name=tillerVersion" json:"tillerVersion,omitempty"`
+	// Options is an unstructured key value map for user to store arbitrary data.
+	Options map[string]string `protobuf:"bytes,16,rep,name=options" json:"options,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
 }
 
 func (m *Metadata) Reset()                    { *m = Metadata{} }
@@ -208,6 +210,13 @@ func (m *Metadata) GetTillerVersion() string {
 	return ""
 }
 
+func (m *Metadata) GetOptions() map[string]string {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
 func init() {
 	proto.RegisterType((*Maintainer)(nil), "hapi.chart.Maintainer")
 	proto.RegisterType((*Metadata)(nil), "hapi.chart.Metadata")
@@ -217,28 +226,31 @@ func init() {
 func init() { proto.RegisterFile("hapi/chart/metadata.proto", fileDescriptor2) }
 
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