RDKB-40197 : sh script syntax
RDKB-40197 : sh script syntax

Reason for change: In TechXB7 VLAN_PUMA7_ENABLE will be empty
Test Procedure: Mesh should work fine on both the XB7
Risks: Low
Signed-off-by:akilesh_karthikeyan@comcast.com

(cherry picked from commit 38cbf27cfa4d17e8b08824b6166cf8296dfc012a)
Change-Id: I7fd14aeff4a9b14918105dea7d3b7eeeb381ff03

rdkcmf/rdkb-CcspWifiAgent,rdkcmf/rdkb-CcspWifiAgent,rdkcmf/rdkb-CcspWifiAgent