Add docker local registry cleaning script

Since with changing data lists there are unused images
left in local registry on build server this
commit adds script that handles that.

Issue-ID: OOM-1952

Change-Id: Ied7a8b09aacd33ef17f0676cfab333d1df8a1a81
Signed-off-by: Milan Verespej <m.verespej@partner.samsung.com>
2 files changed