BUG/MINOR: admin: haproxy-reload rename -vv long option

The -vv option used --verbose as its long form, which was identical to
the long form of -v. Since the case statement matches top-to-bottom,
--verbose would always trigger -v (VERBOSE=2), making -vv unreachable
via its long option. The long form is renamed to --verbose=all to avoid
the conflict, and the usage string is updated accordingly.

Must be backported to 3.3.

admin/cli/haproxy-reload

@@ -62,7 +62,7 @@ usage() {
 	echo "  -t,  --timeout                Timeout (socat -t) (default: ${TIMEOUT})"
 	echo "  -s,  --silent                 Silent mode (no output)"
 	echo "  -v,  --verbose                Verbose output (output from haproxy on failure)"
-	echo "  -vv                           Even more verbose output (output from haproxy on success and failure)"
+	echo "  -vv  --verbose=all            Very verbose output (output from haproxy on success and failure)"
 	echo "  -h,  --help                   This help"
 	echo ""
 	echo "Examples:"
@@ -89,7 +89,7 @@ main() {
 				VERBOSE=2
 				shift
 				;;
-			-vv|--verbose)
+			-vv|--verbose=all)
 				VERBOSE=3
 				shift
 				;;