Merge pull request #729 from telefonicaid/task/step_to_2.7.0

Step: 2.7.0-next -> 2.8.0

CHANGES_NEXT_RELEASE

@@ -1,33 +0,0 @@
-Fix: conf env var about contextbroker host
-Fix: update logops dependence from 1.0.0 to 1.0.8
-Fix: use trust and cbHost from deviceGroup (#685)
-Fix: multientity multimeasure with the same att name
-Add missed conf env vars about authentication (#704)
-Add timestamp in device and group provision (#655)
-Fix: missing support for device=true in the delete service endpoint (see #596)
-Add protocol in device provision if not provided (#652)
-Fix: timestamp is now included just in non empty (more than id and type) multienty entitites
-Fix: object_id fields are not introduced in CB requests by alias plugin (#660)
-Add: uses provisioned timezone to generate TimeInstant values (#672)
-Using precise dependencies (~=) in packages.json
-Fix: updating dependencies due to known vulnerabilities in the previous ones
-    async: 1.5.2 -> 2.6.1
-    body-parser: ~1.11.0 -> ~1.18.3
-    express: ~4.11.2 -> ~4.16.4
-    jison: 0.4.17 -> 0.4.18
-    moment: ~2.19.4 -> ~2.22.2
-    mongodb: 2.2.35 -> 3.1.8
-    mongoose: 4.13.12 -> 5.3.6
-    mustache: 2.2.1 -> 3.0.0
-    query-string: 4.3.4 -> 6.2.0
-    request: 2.39.0 - 2.81.0 -> 2.88.0
-    underscore: ~1.7.0 -> ~1.9.1
-    xmldom: 0.1.19 -> 0.1.27
-Remove: old unused dependencies (sax, grunt, closure-linter-wrapper)
-Fix: mosquitto.conf.example file not found by iot/mosquitto Dockerfile (#554)
-Fix: isDomain is not used anymore for context availability registration (#701)
-Fix: checks ISO8601 timeinstants provided by devices (#679)
-Fix: corrects linting and includes npm run lint in travis
-Remove: XML related code, dependencies and files (#691) 
-Add: extends OAuth2 authentication to support integration with FIWARE Keyrock IDM (#663)
-Add: implements OAuth2 authentication as part of device provisioning requests (#663)

package.json

@@ -1,7 +1,7 @@
 {
   "name": "iotagent-node-lib",
   "description": "IoT Agent library to interface with NGSI Context Broker",
-  "version": "2.7.0-next",
+  "version": "2.8.0",
   "homepage": "https://github.com/telefonicaid/iotagent-node-lib",
   "keywords": [
     "fiware",