Remove the assumption the domain is unique in the manual plugin (#5670)

* use entire achall as key

* Add manual cleanup hook

* use manual cleanup hook

tests/boulder-integration.sh

@@ -233,6 +233,7 @@ certname="dns.le.wtf"
 common -a manual -d dns.le.wtf --preferred-challenges dns,tls-sni run \
     --cert-name $certname \
     --manual-auth-hook ./tests/manual-dns-auth.sh \
+    --manual-cleanup-hook ./tests/manual-dns-cleanup.sh \
     --pre-hook 'echo wtf2.pre >> "$HOOK_TEST"' \
     --post-hook 'echo wtf2.post >> "$HOOK_TEST"' \
     --renew-hook 'echo deploy >> "$HOOK_TEST"'
@@ -433,7 +434,8 @@ done
 # Test ACMEv2-only features
 if [ "${BOULDER_INTEGRATION:-v1}" = "v2" ]; then
     common -a manual -d '*.le4.wtf,le4.wtf' --preferred-challenges dns \
-        --manual-auth-hook ./tests/manual-dns-auth.sh
+        --manual-auth-hook ./tests/manual-dns-auth.sh \
+        --manual-cleanup-hook ./tests/manual-dns-cleanup.sh
 fi
 
 # Most CI systems set this variable to true.

tests/manual-dns-cleanup.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+curl -X POST 'http://localhost:8055/clear-txt' -d \
+    "{\"host\": \"_acme-challenge.$CERTBOT_DOMAIN.\"}"