SKYH4-2718:ULA prefix value should not allowed to save less than 4 characters.
SKYH4-2718:ULA prefix value should not allowed to save less than 4 characters.

Reason for change: Added new attribute to first octet element.

Test Procedure: Login to GUI and navigate to 'Connessione >Rete Local' doesn't accept it the length of charcters in first octect is less than 4 characters.

Risks: low

Signed-off-by: Viswa Patneedi <d846d6cabfacbc3878c9b858929fee58d06b2bd5@sky.uk>
(cherry picked from commit 89ad9134d7291ed29e31d0e63b5e2b34dfcbb2ca)
Change-Id: Ied17674b25b38794df30ff9f5f781c3ddc1d5bd4

rdkcmf/rdkb-webui,rdkcmf/rdkb-webui,rdkcmf/rdkb-webui,rdkcmf/rdkb-webui,rdkcmf/rdkb-webui