ci: ignore commit line limits for signoff lines

In the SignOff custom commit rule, use the original message to check if
signoff exists, since the line may be ignored otherwise.

Signed-off-by: Pablo Barbáchano <[email protected]>

Author: pb8o

.gitlint

@@ -6,7 +6,8 @@ line-length=72
 
 [ignore-body-lines]
 # Ignore HTTP reference links
-regex=^\[.+\]: http.+
+# Ignore lines that start with 'Co-Authored-By' or with 'Signed-off-by'
+regex=(^\[.+\]: http.+)|(^Co-Authored-By)|(^Signed-off-by)
 
 [ignore-by-author-name]
 # Ignore certain rules for commits of which the author name matches a regex

tests/framework/gitlint_rules.py

@@ -100,7 +100,7 @@ def rtn(stmt, i):
         co_auth = "Co-authored-by:"
         sig = "Signed-off-by:"
 
-        message_iter = enumerate(commit.message.body)
+        message_iter = enumerate(commit.message.original.split("\n"))
 
         # Checks commit message contains a `sig` string
         found = False