[power] Introduce artificial delay at the start of the test.

This is to confirm the theory that this test is running too early
and interfering with fusb's power negotiation.

Bug: 342432339
Change-Id: Ic15873d673c9931d3fd0e183968979c01a4d4540
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1056134
Reviewed-by: Michael Brunson <mbrunson@google.com>
Fuchsia-Auto-Submit: HanBin Yoon <hanbinyoon@google.com>
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
Reviewed-by: Victor Costan <costan@google.com>

Author: hanbinyoon

src/power/testing/system-integration/storage/test/test.cc

@@ -136,6 +136,11 @@ class PowerSystemIntegration : public gtest::RealLoopFixture {
 };
 
 TEST_F(PowerSystemIntegration, StorageSuspendResumeTest) {
+  // TODO(b/342432339): Remove this.
+  // This is to confirm the theory that this test is running too early and interfering with fusb's
+  // power negotiation.
+  zx::nanosleep(zx::deadline_after(zx::sec(120)));
+
   // To enable changing SAG's power levels, first trigger the "boot complete" logic. This is done by
   // setting both exec state level and app activity level to active.
   test_sagcontrol::SystemActivityGovernorState state;