[stable/2024.1] Start using Tini for Open vSwitch (#1467)

This is an automated cherry-pick of #1456
/assign mnaser
diff --git a/images/openvswitch/Dockerfile b/images/openvswitch/Dockerfile
index 3b5ff55..02e0ee9 100644
--- a/images/openvswitch/Dockerfile
+++ b/images/openvswitch/Dockerfile
@@ -2,6 +2,7 @@
 # Atmosphere-Rebuild-Time: 2024-06-26T17:38:39Z
 
 FROM quay.io/centos/centos:stream9
+ADD --chmod=755 https://github.com/krallin/tini/releases/download/v0.19.0/tini /tini
 ARG OVS_SERIES=3.2
 ARG OVS_VERSION=${OVS_SERIES}.0-80
 RUN <<EOF sh -xe