Add Ubuntu 26.04 support (#667)

source/installguide/hypervisor/kvm.rst

diff --git a/source/installguide/hypervisor/kvm.rst b/source/installguide/hypervisor/kvm.rst
index f705004..46d3eb8 100644
--- a/source/installguide/hypervisor/kvm.rst
+++ b/source/installguide/hypervisor/kvm.rst
@@ -253,7 +253,7 @@
 
 You can add a DEB package repository to your apt sources with the
 following commands. Replace the code name with your Ubuntu LTS version :
-Ubuntu 22.04 (jammy), Ubuntu 24.04 (noble).
+Ubuntu 22.04 (jammy), Ubuntu 24.04 (noble), Ubuntu 26.04 (resolute).
 
 Use your preferred editor and open (or create)
 ``/etc/apt/sources.list.d/cloudstack.list``. Add the community provided

source/releasenotes/compat.rst

diff --git a/source/releasenotes/compat.rst b/source/releasenotes/compat.rst
index f4a3e17..3972c9d 100644
--- a/source/releasenotes/compat.rst
+++ b/source/releasenotes/compat.rst
@@ -22,7 +22,7 @@
 This section lists the operating systems that are supported for running
 CloudStack Management Server.
 
--  Ubuntu 22.04 LTS, 24.04 LTS
+-  Ubuntu 22.04 LTS, 24.04 LTS, 26.04 LTS
 -  Oracle Linux 8, 9, 10
 -  Rocky Linux 8, 9, 10
 -  Alma Linux 8, 9, 10
@@ -45,7 +45,7 @@
 CloudStack supports three hypervisor families, KVM, XenServer/XCP-ng with XAPI,
 and VMware with vSphere.
 
--  Ubuntu 22.04 LTS, 24.04 LTS with KVM
+-  Ubuntu 22.04 LTS, 24.04 LTS, 26.04 LTS with KVM
 -  Oracle Linux 8, 9, 10 with KVM
 -  Rocky Linux 8, 9, 10 with KVM
 -  Alma Linux 8, 9, 10 with KVM