chore: introduce "test:integration-local" command

This introduces a new "npm run" command: "test:integration-local"
which is equivalent to "test:integration" except that it uses the
proper connection string to connect to a local instance of MongoDB
during development.

Signed-off-by: Andrew Lilley Brinker <abrinker@mitre.org>

Author: alilleybrinker

package.json

@@ -105,6 +105,7 @@
         "swagger-autogen": "node src/swagger.js",
         "test": "NODE_ENV=test mocha --recursive --exit || true",
         "test:integration": "NODE_ENV=test node-dev src/scripts/populate.mjs y; NODE_ENV=test MONGO_CONN_STRING=mongodb://docdb:27017 MONGO_DB_NAME=cve_test node-dev src/scripts/migrate.js; NODE_ENV=test mocha test/integration-tests --recursive --exit",
+        "test:integration-local": "NODE_ENV=test node-dev src/scripts/populate.mjs y; NODE_ENV=test MONGO_CONN_STRING=mongodb://localhost:27017 MONGO_DB_NAME=cve_test node-dev src/scripts/migrate.js; NODE_ENV=test mocha test/integration-tests --recursive --exit",
         "test:unit-tests": "NODE_ENV=test mocha test/unit-tests --recursive --exit || true",
         "test:coverage": "NODE_ENV=test nyc --reporter=text mocha src/* --recursive --exit || true",
         "test:coverage-html": "NODE_ENV=test nyc --reporter=html mocha src/* --recursive --exit || true",