Switch to mkisofs for openSUSE distributions

In Tumbleweed genisoimage was dropped in favor of cdrtools,
so installing that no longer works. We can however install
mkisofs directly and switch to that as that is also available
in Leap 42.3 and Leap 15.0+ family distros.

Also drop dependency on libmysqlclient-devel which appears
unnecessary (and is no longer available with mariadb 10.2+)

Change-Id: Ie8402204b6cdf94c21865caba116d3fd1298c5ad

files/rpms-suse/general

@@ -11,7 +11,6 @@ graphviz # docs
 iputils
 libffi-devel  # pyOpenSSL
 libjpeg8-devel # Pillow 3.0.0
-libmysqlclient-devel # MySQL-python
 libopenssl-devel # to rebuild pyOpenSSL if needed
 libxslt-devel  # lxml
 lsof # useful when debugging

files/rpms-suse/n-cpu

@@ -1,7 +1,7 @@
 cryptsetup
-genisoimage
 libosinfo
 lvm2
+mkisofs
 open-iscsi
 sg3_utils
 # Stuff for diablo volumes

files/rpms-suse/nova

@@ -4,7 +4,6 @@ dnsmasq
 dnsmasq-utils # dist:opensuse-12.3,opensuse-13.1
 ebtables
 gawk
-genisoimage # required for config_drive
 iptables
 iputils
 kpartx
@@ -12,6 +11,7 @@ kvm # NOPRIME
 libvirt # NOPRIME
 libvirt-python # NOPRIME
 mariadb # NOPRIME
+mkisofs # required for config_drive
 parted
 polkit
 # qemu as fallback if kvm cannot be used

lib/nova

@@ -506,6 +506,12 @@ function create_nova_conf {
     if [ "$FORCE_CONFIG_DRIVE" != "False" ]; then
         iniset $NOVA_CONF DEFAULT force_config_drive "$FORCE_CONFIG_DRIVE"
     fi
+
+    # nova defaults to genisoimage but only mkisofs is available for 15.0+
+    if is_suse; then
+        iniset $NOVA_CONF DEFAULT mkisofs_cmd /usr/bin/mkisofs
+    fi
+
     # Format logging
     setup_logging $NOVA_CONF