Add support for git volumes.

pkg/api/v1beta2/types.go

@@ -69,6 +69,8 @@ type VolumeSource struct {
 	// A persistent disk that is mounted to the
 	// kubelet's host machine and then exposed to the pod.
 	GCEPersistentDisk *GCEPersistentDisk `yaml:"persistentDisk" json:"persistentDisk"`
+	// GitRepo represents a git repository at a particular revision.
+	GitRepo *GitRepo `json:"gitRepo" yaml:"gitRepo"`
 }
 
 // HostDir represents bare host directory volume.
@@ -124,6 +126,14 @@ type GCEPersistentDisk struct {
 	ReadOnly bool `yaml:"readOnly,omitempty" json:"readOnly,omitempty"`
 }
 
+// GitRepo represents a volume that is pulled from git when the pod is created.
+type GitRepo struct {
+	// Repository URL
+	Repository string `yaml:"repository" json:"repository"`
+	// Commit hash, this is optional
+	Revision string `yaml:"revision" json:"revision"`
+}
+
 // VolumeMount describes a mounting of a Volume within a container.
 type VolumeMount struct {
 	// Required: This must match the Name of a Volume [above].