Update Containerfile

nfs-utils-coreos conflicts with nfs-utils, dependency of targetd. We will run iscsi as part of a container so no need to install it here. 

Refers coreos/fedora-coreos-tracker#572

images/fcos-base-image/Containerfile

@@ -15,7 +15,7 @@ RUN set -x; arch=$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/'); cat /etc/
 RUN set -x; PACKAGES_INSTALL="bridge-utils conntrack-tools curl fping iftop iputils iproute mtr nethogs socat"; \
     rpm-ostree install $PACKAGES_INSTALL && ostree container commit
 
-RUN set -x; PACKAGES_INSTALL="chrony targetd targetcli"; \
+RUN set -x; PACKAGES_INSTALL="chrony targetcli"; \
     rpm-ostree install $PACKAGES_INSTALL && rm -rf /var/* && ostree container commit
 
 RUN set -x; PACKAGES_INSTALL="net-tools bind-utils iperf iperf3 iputils mtr ethtool tftp wget ipmitool"; \