Followup fix for BUG#21950975 - MYSQL RPM INSTALLER(NEW STYLE) FAILS TO CREATE 'MYSQL' USER FOR EL5

(cherry picked from commit 01be55cdbbc9e5f9d2cb59d1aafb87717d82a9c0)

Author: bkandasa

packaging/rpm-oel/mysql.spec.in

@@ -675,7 +675,7 @@ rm -r $(readlink var) var
 
 %pre server
 /usr/sbin/groupadd -g 27 -o -r mysql >/dev/null 2>&1 || :
-/usr/sbin/useradd -M %{!?el5:-N} -g mysql -o -r -d /var/lib/mysql -s /bin/bash \
+/usr/sbin/useradd -M %{!?el5:-N} -g mysql -o -r -d /var/lib/mysql -s /bin/false \
     -c "MySQL Server" -u 27 mysql >/dev/null 2>&1 || :
 
 %post server