LU-17000 utils: Initialize var 'gw' and 'net' before using

LU-17000 utils: Initialize var 'gw' and 'net' before using

Although this is called at "sequence end" and most
likely 'gw' and 'net' will be populated by then. It
is still good to be defensive and make them initialize

Test-Parameters: trivial testlist=sanity-lnet
CoverityID: 410246 ("Uninitialized scalar variable")
CoverityID: 410240 ("Uninitialized scalar variable")
Signed-off-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Change-Id: I2f47df431eea0e0344043ac22806865e87435c6e
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/55316
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>