shell-completion: add systemd-analyze set-log-target

The `systemd-analyze set-log-target` command was added in v227 (commit
2ca2a91cf1), but was missing from the shell completion specifications.

shell-completion/bash/systemd-analyze

@@ -44,6 +44,7 @@ _systemd_analyze() {
                 [CRITICAL_CHAIN]='critical-chain'
                 [DOT]='dot'
                 [LOG_LEVEL]='set-log-level'
+                [LOG_TARGET]='set-log-target'
                 [VERIFY]='verify'
                 [SECCOMP_FILTER]='syscall-filter'
         )
@@ -101,6 +102,13 @@ _systemd_analyze() {
                         comps='debug info notice warning err crit alert emerg'
                 fi
 
+        elif __contains_word "$verb" ${VERBS[LOG_TARGET]}; then
+                if [[ $cur = -* ]]; then
+                        comps='--help --version --system --user'
+                else
+                        comps='console journal kmsg journal-or-kmsg null'
+                fi
+
         elif __contains_word "$verb" ${VERBS[SECCOMP_FILTER]}; then
                 if [[ $cur = -* ]]; then
                         comps='--help --version'