Make usage of initscripts optional

Do not depend hard on initscript just to provide fancy colored status.
When started from systemd, it does not really matter.

Return exactly the same return code as returned by the original tool.

bind.spec

@@ -1606,6 +1606,7 @@ fi;
 %changelog
 * Fri May 15 2020 Petr Menšík <pemensik@redhat.com> - 32:9.11.19-1
 - Update to 9.11.19 (CVE-2020-8616, CVE-2020-8617)
+- Make initscripts just optional dependency
 
 * Tue Apr 21 2020 Björn Esser <besser82@fedoraproject.org> - 32:9.11.18-2
 - Rebuild (json-c)

generate-rndc-key.sh

@@ -1,6 +1,17 @@
 #!/bin/bash
 
-. /etc/rc.d/init.d/functions
+if [ -r /etc/rc.d/init.d/functions ]; then
+	. /etc/rc.d/init.d/functions
+else
+success() {
+	echo $" OK "
+}
+
+failure() {
+	echo -n " "
+	echo $"FAILED"
+}
+fi
 
 # This script generates /etc/rndc.key if doesn't exist AND if there is no rndc.conf
 
@@ -14,7 +25,9 @@ if [ ! -s /etc/rndc.key -a ! -s /etc/rndc.conf ]; then
     success $"/etc/rndc.key generation"
     echo
   else
+    rc=$?
     failure $"/etc/rndc.key generation"
     echo
+    exit $rc
   fi
 fi