fix: Store and retrieve device config without namespaces

This avoids issues on provisioning where the current state
(esp. config.txt) that we want to save is retrieved without
a RESIN_ or BALENA_ prefix, causing those values to be lost.

Change-type: patch
Signed-off-by: Pablo Carranza Velez <pablo@balena.io>

src/migrations/M00000.js

@@ -0,0 +1,20 @@
+const _ = require('lodash');
+
+// We take legacy deviceConfig targets and store them without the RESIN_ prefix
+// (we also strip the BALENA_ prefix for completeness, even though no supervisors
+// using this prefix made it to production)
+exports.up = function (knex, Promise) {
+	return knex('deviceConfig').select('targetValues')
+		.then((devConfigs) => {
+			const devConfig = devConfigs[0];
+			const targetValues = JSON.parse(devConfig.targetValues);
+			const filteredTargetValues = _.mapKeys( (_v, k) => {
+				return k.replace(/^(?:RESIN|BALENA)_(.*)/, '$1');
+			});
+			return knex('deviceConfig').update({ targetValues: JSON.stringify(filteredTargetValues) });
+		});
+}
+
+exports.down = function (knex, Promise) {
+	return Promise.reject(new Error('Not Implemented'));
+}