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[libvirt PATCH] network: Use single quotes in default network configuration

Whenever libvirt is upgraded on a Debian system, the user will be
prompted along the lines of

  Configuration file '/etc/libvirt/qemu/networks/default.xml'
   ==> Modified (by you or by a script) since installation.
   ==> Package distributor has shipped an updated version.
     What would you like to do about it ?  Your options are:
      Y or I  : install the package maintainer's version
      N or O  : keep your currently-installed version
        D     : show the differences between the versions
        Z     : start a shell to examine the situation
   The default action is to keep your current version.
  *** default.xml (Y/I/N/O/D/Z) [default=N] ? d
  --- /etc/libvirt/qemu/networks/default.xml      2020-08-04 12:57:25.450911143 +0200
  +++ /etc/libvirt/qemu/networks/default.xml.dpkg-new     2020-08-03 22:47:15.000000000 +0200
  @@ -1,19 +1,11 @@
  -OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
  -  virsh net-edit default
  -or other application using the libvirt API.
  -  <uuid>612a2cab-72fb-416d-92bc-4d9e597bfb63</uuid>
  -  <forward mode='nat'/>
  -  <bridge name='virbr0' stp='on' delay='0'/>
  -  <mac address='52:54:00:1f:03:79'/>
  -  <ip address='' netmask=''>
  +  <uuid>d020b839-4379-492c-aa74-eab7365076e6</uuid>
  +  <bridge name="virbr0"/>
  +  <forward/>
  +  <ip address="" netmask="">
  -      <range start='' end=''/>
  +      <range start="" end=""/>

The UUID situation should probably be handled the same way it is
in the spec file by stripping it, and in general we could behave
much better towards users, but one part of the diff that
immediately stands out is that some lines are highlighted not
because they are semantically different, but simply because they
use different types of quotes around attributes.

Since the canonical version of all libvirt XML documents (as
returned by the various vir*GetXMLDesc() APIs) as well as the
on-disk representations use single quotes, let's use the same
for configuration files we install as well.

Signed-off-by: Andrea Bolognani <abologna redhat com>
 src/network/default.xml.in | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/network/default.xml.in b/src/network/default.xml.in
index d7241d0c16..08a3632eb6 100644
--- a/src/network/default.xml.in
+++ b/src/network/default.xml.in
@@ -1,10 +1,10 @@
-  <bridge name="virbr0"/>
+  <bridge name='virbr0'/>
-  <ip address="" netmask="">
+  <ip address='' netmask=''>
-      <range start="" end=""/>
+      <range start='' end=''/>

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