Missing Volume Clone API

[humblec]

Currently GD2 is missing a single API for create a Clone from a volume. At present the consumer/client has to call snapcreate,activate and snapclone to create a volume from a source volume. These actions should be wrapped up in a single API so that client can call it via couple of args as shown below and get the new volume which is clone of the source.

func CloneVolume(Parentvolumename, CloneVolumeName)

[humblec]

@Madhu-1 fyi :)

[aravindavk]

@rafikc30 ^^

[atinmu]

Not a priority for GCS 1.0.