fix bug https://github.com/Neilpang/acme.sh/issues/2695

If a domain was already verified by http-01 method,  when we try to issue a cert for them same domain with dns-01 method, we just get only one challenge object of type http-01 with "valid" status, from the authz-v3 url. So, we report error that we are not able the validate the domain, because of that we don't find dns-01 challenge.
This behavior is not the same as before. I believe it was changed by the letsencrypt CA.

acme.sh

@@ -4119,8 +4119,18 @@ $_authorizations_map"
 
       entry="$(echo "$response" | _egrep_o '[^\{]*"type":"'$vtype'"[^\}]*')"
       _debug entry "$entry"
+      keyauthorization=""
       if [ -z "$entry" ]; then
-        _err "Error, can not get domain token entry $d"
+        _err "Error, can not get domain token entry $d for $vtype"
+        if ! _startswith "$d" '*.'; then
+          _debug "Not a wildcard domain, lets check whether the validation is already valid."
+          if echo "$response" | grep '"status":"valid"' >/dev/null 2>&1; then
+            _debug "$d is already valid."
+            keyauthorization="$STATE_VERIFIED"
+            _debug keyauthorization "$keyauthorization"
+          fi
+        fi
+        if [ -z "$keyauthorization" ]; then
           _supported_vtypes="$(echo "$response" | _egrep_o "\"challenges\":\[[^]]*]" | tr '{' "\n" | grep type | cut -d '"' -f 4 | tr "\n" ' ')"
           if [ "$_supported_vtypes" ]; then
             _err "The supported validation types are: $_supported_vtypes, but you specified: $vtype"
@@ -4129,6 +4139,9 @@ $_authorizations_map"
           _on_issue_err "$_post_hook"
           return 1
         fi
+      fi
+      
+      if [ -z "$keyauthorization" ]; then
         token="$(echo "$entry" | _egrep_o '"token":"[^"]*' | cut -d : -f 2 | tr -d '"')"
         _debug token "$token"
 
@@ -4159,6 +4172,7 @@ $_authorizations_map"
           keyauthorization="$STATE_VERIFIED"
           _debug keyauthorization "$keyauthorization"
         fi
+      fi
 
       dvlist="$d$sep$keyauthorization$sep$uri$sep$vtype$sep$_currentRoot"
       _debug dvlist "$dvlist"