Temporarily increase timeouts

Increase the timeouts for container startup temporarily due to the need
of using emulated ppc workers.

tests/test_mariadb.py

@@ -82,9 +82,10 @@ def _generate_test_matrix() -> List[ParameterSet]:
     return params
 
 
+## FIXME Increased attempts from 5 to 8 due to https://github.com/SUSE/BCI-tests/issues/647
 @retry(
     wait=wait_exponential(multiplier=1, min=4, max=10),
-    stop=stop_after_attempt(5),
+    stop=stop_after_attempt(8),
 )
 def _wait_for_server(connection):
     connection.check_output("healthcheck.sh --connect")

tests/test_postgres.py

@@ -87,6 +87,7 @@ def test_postgres_db_env_vars(
     pg_user: Optional[str],
     password: str,
     username: Optional[str],
+    healthcheck_timeout: 180,  # FIXME https://github.com/SUSE/BCI-tests/issues/647
 ) -> None:
     """Simple smoke test connecting to the PostgreSQL database using the example
     from `<https://www.psycopg.org/docs/usage.html#basic-module-usage>`_ while