Add flag to skip HTTP_TOKEN check

In case that routing to $wellknown_url is different from the local host than it is from LE servers, it might be necessary to skip downloading the HTTP Token in order to proceed with ACME Challenge Auth

getssl

@@ -219,6 +219,7 @@ _CREATE_CONFIG=0
 _FORCE_RENEW=0
 _KEEP_VERSIONS=""
 _MUTE=0
+_NO_TOKENCHECK=0
 _QUIET=0
 _RECREATE_CSR=0
 _REVOKE=0
@@ -1188,6 +1189,8 @@ while [[ -n $1 ]]; do
      _CHECK_ALL=1 ;;
     -k | --keep)
      shift; _KEEP_VERSIONS="$1";;
+	-n | --no-tokencheck)
+	 _NO_TOKENCHECK=1
     -q | --quiet)
      _QUIET=1 ;;
     -Q | --mute)
@@ -1777,11 +1780,13 @@ for d in $alldomains; do
       if [[ "$SKIP_HTTP_TOKEN_CHECK" == "true" ]]; then
         info "SKIP_HTTP_TOKEN_CHECK=true so not checking that token is working correctly"
       else
-        sleep "$HTTP_TOKEN_CHECK_WAIT"
-        # check that we can reach the challenge ourselves, if not, then error
-        if [[ ! "$(curl -k --silent --location "$wellknown_url")" == "$keyauthorization" ]]; then
-          error_exit "for some reason could not reach $wellknown_url - please check it manually"
-        fi
+	    if [[ ${_NO_TOKENCHECK} -eq 0 ]]; then
+          sleep "$HTTP_TOKEN_CHECK_WAIT"
+          # check that we can reach the challenge ourselves, if not, then error
+          if [[ ! "$(curl -k --silent --location "$wellknown_url")" == "$keyauthorization" ]]; then
+            error_exit "for some reason could not reach $wellknown_url - please check it manually"
+          fi
+		fi
       fi
 
       check_challenge_completion "$uri" "$d" "$keyauthorization"