change default value of SELENIUM_SERVER
change default value of SELENIUM_SERVER

Change-Id: Iefd8a8abae22fcb265d3f3cf65b339bbcca47e4c
Signed-off-by: Martin Bukatovic <52cc76bd08fbc19202f483d11b262991c2ee1bfc@redhat.com>

Webstr-framework/webstr