Supress output of mariadb key import.

install/hst-install-debian.sh

@@ -507,7 +507,7 @@ fi
 
 # Installing MariaDB repo
 echo "deb http://ams2.mirrors.digitalocean.com/mariadb/repo/10.3/$VERSION $codename main" > $apt/mariadb.list
-apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xF1656F24C74CD1D8 > /dev/null 2>&1
+apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xF1656F24C74CD1D8 1>&- 2>&-
 
 # Installing hestia repo
 echo "deb https://$RHOST/ $codename main" > $apt/hestia.list