Add squid to the relevant mappings

Change-Id: I046fb14939c787133d9a094aaacfbcd2884b8c80

charms_ceph/utils.py

@@ -3172,6 +3172,7 @@ UPGRADE_PATHS = collections.OrderedDict([
     ('octopus', 'pacific'),
     ('pacific', 'quincy'),
     ('quincy', 'reef'),
+    ('reef', 'squid'),
 ])
 
 # Map UCA codenames to Ceph codenames
@@ -3196,6 +3197,7 @@ UCA_CODENAME_MAP = {
     'zed': 'quincy',
     'antelope': 'quincy',
     'bobcat': 'reef',
+    'caracal': 'squid',
 }
 
 

unit_tests/test_utils.py

@@ -1070,6 +1070,7 @@ class CephTestCase(unittest.TestCase):
             'octopus -> pacific',
             'pacific -> quincy',
             'quincy -> reef',
+            'reef -> squid',
         ])
         self.assertEqual(utils.pretty_print_upgrade_paths(), expected)