fix(certbot): Fix hook for dovecot (too strict)

When we use a separate certificate for POP3 and IMAP there might be
blank characters (almost certainly spaces but might as well be more lax)
before `ssl_cert` which resulted in these lines not being detected and
the hook not being played, forcing manual intervention.

This commit fixes that problem by accepting blank characters before
ssl_certs. (`\b` might be even better...)

CHANGELOG.md

@@ -49,6 +49,7 @@ The **patch** part changes is incremented if multiple releases happen the same m
 * webapps/nextcloud: fix misplaced gid attribute
 * webapps/nextcloud: fix missing gid
 * check stat.exists before stat.isdir
+* certbot: Fix hook for dovecot when more than one certificate is used (eg. different certificates for POP3 and IMAP)
 
 ### Removed
 

certbot/files/hooks/deploy/dovecot.sh

@@ -16,7 +16,7 @@ config_check() {
     ${doveconf_bin} > /dev/null 2>&1
 }
 letsencrypt_used() {
-    ${doveconf_bin} | grep -E "^ssl_cert[^_]" | grep -q "letsencrypt"
+    ${doveconf_bin} | grep -E "^[[:blank:]]*ssl_cert[^_]" | grep -q "letsencrypt"
 }
 main() {
     if daemon_found_and_running; then