Bump swap to 2GB in linuxbridge/openvswitch jobs

Currently these jobs are running with 1GB swap
and fails sometimes with oom kill as node goes out
of memory.

Doubling the space to 2GB should help in avoiding
these random failures.

The issue seems to be triggered after api/scenario
jobs are combined[1]. So bumping only for the affected
jobs and also not bumping to 4GB/8GB because
in that case we may hide future actual issues.

[1] https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/836912

Related-Bug: #1940243
Change-Id: Icded7e5a3b6484178ea2c9b145068788f23554e2
diff --git a/zuul.d/master_jobs.yaml b/zuul.d/master_jobs.yaml
index 7bb7149..1122a38 100644
--- a/zuul.d/master_jobs.yaml
+++ b/zuul.d/master_jobs.yaml
@@ -218,6 +218,7 @@
     parent: neutron-tempest-plugin-base-nested-switch
     timeout: 10000
     vars:
+      configure_swap_size: 2048
       devstack_services:
         # Disable OVN services
         br-ex-tcpdump: false
@@ -310,6 +311,7 @@
     parent: neutron-tempest-plugin-base-nested-switch
     timeout: 10000
     vars:
+      configure_swap_size: 2048
       devstack_services:
         # Disable OVN services
         br-ex-tcpdump: false
@@ -449,6 +451,7 @@
       - zuul: openstack/neutron
     pre-run: playbooks/linuxbridge-scenario-pre-run.yaml
     vars:
+      configure_swap_size: 2048
       devstack_services:
         # Disable OVN services
         br-ex-tcpdump: false