[PATCH 2/9] tests/avocado: mark boot_linux.py long runtime instead of flaky

[Nicholas Piggin <npiggin@gmail.com>]

The ppc64 and s390x tests were first marked skipIf GITLAB_CI by commit
c0c8687ef0f ("tests/avocado: disable BootLinuxPPC64 test in CI"), and
commit 0f26d94ec9e ("tests/acceptance: skip s390x_ccw_vrtio_tcg on
GitLab") due to being very heavy-weight for gitlab CI.

Commit 9b45cc99318 ("docs/devel: rationalise unstable gitlab tests under
FLAKY_TESTS") changed this to being flaky but it isn't really, it just
had a long runtime.

So introduce a new AVOCADO_ALLOW_LONG_RUNTIME variable and make these
tests require it. Re-testing the s390x and ppc64 tests on gitlab shows
about 100-150s runtime each, which is similar to the x86-64 tests.
Since these are among the longest running avocado tests, make x86-64
require long runtime as well.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 docs/devel/testing.rst      | 8 ++++++++
 tests/avocado/boot_linux.py | 8 ++------
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst
index bd132306c1..3a9c1327be 100644
--- a/docs/devel/testing.rst
+++ b/docs/devel/testing.rst
@@ -1346,6 +1346,14 @@ the environment.
 The definition of *large* is a bit arbitrary here, but it usually means an
 asset which occupies at least 1GB of size on disk when uncompressed.
 
+AVOCADO_ALLOW_LONG_RUNTIME
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+Tests which have a long runtime will not be run unless that
+``AVOCADO_ALLOW_LONG_RUNTIME=1`` is exported on the environment.
+
+The definition of *long* is a bit arbitrary here, but it usually means a
+test which takes more than 100 seconds to complete.
+
 AVOCADO_ALLOW_UNTRUSTED_CODE
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 There are tests which will boot a kernel image or firmware that can be
diff --git a/tests/avocado/boot_linux.py b/tests/avocado/boot_linux.py
index 7c4769904e..6df0fc0489 100644
--- a/tests/avocado/boot_linux.py
+++ b/tests/avocado/boot_linux.py
@@ -93,13 +93,11 @@ class BootLinuxPPC64(LinuxTest):
 
     timeout = 360
 
-    @skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test is unstable on GitLab')
-
+    @skipUnless(os.getenv('AVOCADO_ALLOW_LONG_RUNTIME'), 'runtime limited')
     def test_pseries_tcg(self):
         """
         :avocado: tags=machine:pseries
         :avocado: tags=accel:tcg
-        :avocado: tags=flaky
         """
         self.require_accelerator("tcg")
         self.vm.add_args("-accel", "tcg")
@@ -113,13 +111,11 @@ class BootLinuxS390X(LinuxTest):
 
     timeout = 240
 
-    @skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test is unstable on GitLab')
-
+    @skipUnless(os.getenv('AVOCADO_ALLOW_LONG_RUNTIME'), 'runtime limited')
     def test_s390_ccw_virtio_tcg(self):
         """
         :avocado: tags=machine:s390-ccw-virtio
         :avocado: tags=accel:tcg
-        :avocado: tags=flaky
         """
         self.require_accelerator("tcg")
         self.vm.add_args("-accel", "tcg")
-- 
2.42.0