Merge pull request #701 from albers/completion-trust-sign--local

Add bash completion for `trust sign --local`
Upstream-commit: e5d49c0199
Component: cli

components/cli/contrib/completion/bash/docker

@@ -4706,7 +4706,7 @@ _docker_trust_revoke() {
 _docker_trust_sign() {
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "--help" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "--help --local" -- "$cur" ) )
 			;;
 		*)
 			local counter=$(__docker_pos_first_nonflag)