Mark bugreport_test_test and snapshot_test_test as flaky = True

These tests sometimes time out. When `flaky` is set to `True`, the test
will be re-run up to 3 times to try to get a passing result.

https://bazel.build/reference/be/common-definitions#test.flaky

Bug: b/465510723
Bug: b/465512053

Author: Databean

e2etests/orchestration/bugreport_test/BUILD.bazel

@@ -21,6 +21,7 @@ go_test(
         "//orchestration/artifacts:cvd_host_package",
         "//orchestration/artifacts:images_zip",
     ],
+    flaky = True,
     deps = [
         "//orchestration/common",
         "@com_github_google_android_cuttlefish_frontend_src_libhoclient//:libhoclient",

e2etests/orchestration/snapshot_test/BUILD.bazel

@@ -21,6 +21,7 @@ go_test(
         "//orchestration/artifacts:cvd_host_package",
         "//orchestration/artifacts:images_zip",
     ],
+    flaky = True,
     deps = [
         "//orchestration/common",
         "@com_github_google_android_cuttlefish_frontend_src_host_orchestrator//api/v1:api",