Add caracal support

This patch enables caracal in the various places needed for charms to be
able to detect and operate with either jammy-caracal or caracal on the
nobel distro.

charmhelpers/contrib/openstack/utils.py

@@ -161,6 +161,7 @@
     ('2022.2', 'zed'),
     ('2023.1', 'antelope'),
     ('2023.2', 'bobcat'),
+    ('2024.1', 'caracal'),
 ])
 
 # The ugly duckling - must list releases oldest to newest

charmhelpers/fetch/ubuntu.py

@@ -246,6 +246,14 @@
     'bobcat/proposed': 'jammy-proposed/bobcat',
     'jammy-bobcat/proposed': 'jammy-proposed/bobcat',
     'jammy-proposed/bobcat': 'jammy-proposed/bobcat',
+    # caracal
+    'caracal': 'jammy-updates/caracal',
+    'jammy-caracal': 'jammy-updates/caracal',
+    'jammy-caracal/updates': 'jammy-updates/caracal',
+    'jammy-updates/caracal': 'jammy-updates/caracal',
+    'caracal/proposed': 'jammy-proposed/caracal',
+    'jammy-caracal/proposed': 'jammy-proposed/caracal',
+    'jammy-proposed/caracal': 'jammy-proposed/caracal',
 
     # OVN
     'focal-ovn-22.03': 'focal-updates/ovn-22.03',
@@ -279,6 +287,7 @@
     'zed',
     'antelope',
     'bobcat',
+    'caracal',
 )
 
 
@@ -308,6 +317,7 @@
     ('kinetic', 'zed'),
     ('lunar', 'antelope'),
     ('mantic', 'bobcat'),
+    ('nobel', 'caracal'),
 ])