tests: Avoid squential expect.BExp in test_id:1778
tests: Avoid squential expect.BExp in test_id:1778

It can cause the test to be flaky as explained in PR
https://github.com/kubevirt/kubevirt/pull/3693

Signed-off-by: Alona Kaplan <9ea2f88c7fe7e68aa51858b03e0d548211901b83@redhat.com>

stu-gott/kubevirt,davidvossel/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt,davidvossel/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,davidvossel/kubevirt,stu-gott/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt