Set an IP address with one line in RHEL7/CentOS7
Use this line:
# nmcli con mod ens160 ipv4.method static ipv4.addresses ${IPADDR} ipv4.gateway ${GATEWAY} ipv4.dns ${DNS_SERVERS}
The DNS servers (if more than one) should be in quotes and comma-separated (i.e. "10.1.1.5,10.2.2.6")