Do not use sudo with OVN_DATADIR when building from source

Jobs with OVN_BUILD_FROMS_SOURCE=True are broken
since [1] as ovn nortd not starting due to permission
issues. Fix it by not using sudo for creating OVN_DATADIR
when building from source.

[1] https://review.opendev.org/c/openstack/devstack/+/806858

Closes-Bug: #1952393
Change-Id: I00f0c8c8173b4d8270fbb3e6079d0d8b332e9de5

lib/neutron_plugins/ovn_agent

@@ -568,7 +568,11 @@ function init_ovn {
 
     _disable_libvirt_apparmor
 
-    sudo mkdir -p $OVN_DATADIR
+    if [[ "$OVN_BUILD_FROM_SOURCE" == "True" ]]; then
+        mkdir -p $OVN_DATADIR
+    else
+        sudo mkdir -p $OVN_DATADIR
+    fi
     mkdir -p $OVS_DATADIR
 
     rm -f $OVS_DATADIR/*.db