Add Iron to the list of distributions. (ros2#3485)

Signed-off-by: Chris Lalancette <[email protected]>

Author: clalancette

.mergify.yml

@@ -6,6 +6,7 @@ pull_request_rules:
     actions:
       backport:
         branches:
+          - iron
           - humble
           - foxy
 
@@ -16,9 +17,19 @@ pull_request_rules:
     actions:
       backport:
         branches:
+          - iron
           - humble
           - foxy
 
+  - name: backport to iron at reviewers discretion
+    conditions:
+      - base=rolling
+      - "label=backport-iron"
+    actions:
+      backport:
+        branches:
+          - iron
+
   - name: backport to humble at reviewers discretion
     conditions:
       - base=rolling

conf.py

@@ -122,7 +122,7 @@
 
 # smv_tag_whitelist = None
 
-smv_branch_whitelist = r'^(rolling|humble|galactic|foxy|eloquent|dashing|crystal)$'
+smv_branch_whitelist = r'^(rolling|iron|humble|galactic|foxy|eloquent|dashing|crystal)$'
 
 
 smv_released_pattern = r'^refs/(heads|remotes/[^/]+)/(humble|galactic|foxy|eloquent|dashing|crystal).*$'
@@ -137,6 +137,7 @@
     'foxy': 'Foxy Fitzroy',
     'galactic': 'Galactic Geochelone',
     'humble': 'Humble Hawksbill',
+    'iron': 'Iron Irwini',
     'rolling': 'Rolling Ridley',
 }