smoketest: T7996: replace hardcoded sleep(8) in VRF test with wait_for()

The original VRF DHCP test case, introduced in commit 186900f7165b2
("smoketest: T7927: test DHCP route preservation"), used a fixed delay of
8 seconds to wait for the DHCP server and client to initialize. This approach
was unreliable and could cause unnecessary test delays.

Since commit 354517677f ("wlb: T7977: Updated smoketest to validate nft vmap
weight buckets"), the "vyos.utils.misc.wait_for()" helper provides a more
efficient busy-wait loop with an early-exit condition. This test case now uses
wait_for() to detect when the DHCP-assigned default route becomes available,
eliminating the fixed sleep and reducing test runtime.

0 files changed, 0 insertions, 0 deletions