Update Node.js LTS status
Update Node.js LTS status

* v4 reached End-of-Life status on 2018-04-30
* v10 became Active LTS on 2018-20-30

aerospike/aerospike-client-nodejs,aerospike/aerospike-client-nodejs,aerospike/aerospike-client-nodejs,aerospike/aerospike-client-nodejs,aerospike/aerospike-client-nodejs