chore(ci): double pytest timeout duration temporarily

Currently our A/B testing builds Firecracker for each test and each
environment while running tests. As the Firecracker build time
increases, some tests timeout the current duration (300s). To mitigate
this issue temporarily, sets it to 600s. It should be set it back to the
original value after fixing the issue in PR #4624.

Signed-off-by: Takahiro Itazuri <itazur@amazon.com>

Author: zulinx86

tests/pytest.ini

@@ -15,7 +15,9 @@ markers =
 norecursedirs = .*
 
 ; Default timeout for tests. can be overwritten at finer grained levels.
-timeout = 300
+; TODO: reduce the number of times to build Firecracker in A/B test and set it
+; back to 300 seconds.
+timeout = 600
 
 ; Set the cache dir location to our build dir, so we don't litter the source
 ; tree.