bridge: include attempted IP address in AddrAdd error message

This PR includes the IP in the `AddrAdd` error message which could help debug better with any issues while adding the IP address to the bridge and improves the readability.

Signed-off-by: Amulyam24 <amulmek1@in.ibm.com>

plugins/main/bridge/bridge.go

diff --git a/plugins/main/bridge/bridge.go b/plugins/main/bridge/bridge.go
index 0b5a157..476e6d5 100644
--- a/plugins/main/bridge/bridge.go
+++ b/plugins/main/bridge/bridge.go
@@ -295,7 +295,7 @@
 
 	addr := &netlink.Addr{IPNet: ipn, Label: ""}
 	if err := netlink.AddrAdd(br, addr); err != nil && err != syscall.EEXIST {
-		return fmt.Errorf("could not add IP address to %q: %v", br.Attrs().Name, err)
+		return fmt.Errorf("could not add IP address %s to %q: %v", ipnStr, br.Attrs().Name, err)
 	}
 
 	// Set the bridge's MAC to itself. Otherwise, the bridge will take the