[PR #11097/40aea793 backport][stable-12] Use raise from in modules (#11130)

Use raise from in modules (#11097)

* Use raise from.

* Add changelog fragment.

* Add comment.

(cherry picked from commit 40aea793ee)

Co-authored-by: Felix Fontein <felix@fontein.de>

plugins/modules/packet_ip_subnet.py

@@ -212,8 +212,8 @@ def parse_subnet_cidr(cidr):
     addr, prefixlen = cidr.split("/")
     try:
         prefixlen = int(prefixlen)
-    except ValueError:
-        raise Exception(f"Wrong prefix length in CIDR expression {cidr}")
+    except ValueError as e:
+        raise Exception(f"Wrong prefix length in CIDR expression {cidr}") from e
     return addr, prefixlen