add chkconfig to INSTALLER_DEPS (CentOS/Fedora)

chkconfig is a dependency of spawn-fcgi which is a dependency of lighttpd which is installed via PIHOLE_WEB_DEPS in phase 2
adding chkconfig to INSTALLER_DEPS to ensure /etc/init.d is present during the installation prompts (phase 1)

Signed-off-by: bcambl <blayne@blaynecampbell.com>

automated install/basic-install.sh

@@ -283,7 +283,7 @@ elif is_command rpm ; then
     UPDATE_PKG_CACHE=":"
     PKG_INSTALL=(${PKG_MANAGER} install -y)
     PKG_COUNT="${PKG_MANAGER} check-update | egrep '(.i686|.x86|.noarch|.arm|.src)' | wc -l"
-    INSTALLER_DEPS=(dialog git iproute newt procps-ng which)
+    INSTALLER_DEPS=(dialog git iproute newt procps-ng which chkconfig)
     PIHOLE_DEPS=(bind-utils cronie curl findutils nmap-ncat sudo unzip wget libidn2 psmisc sqlite libcap)
     PIHOLE_WEB_DEPS=(lighttpd lighttpd-fastcgi php-common php-cli php-pdo)
     LIGHTTPD_USER="lighttpd"