Add support for Android O Developer Preview 1.

lib/units/device/support/sdk.js

@@ -0,0 +1,36 @@
+var syrup = require('stf-syrup')
+
+var logger = require('../../../util/logger')
+
+module.exports = syrup.serial()
+  .dependency(require('./properties'))
+  .define(function(options, properties) {
+    var log = logger.createLogger('device:support:sdk')
+    return (function() {
+      var level = parseInt(properties['ro.build.version.sdk'], 10)
+      var previewDelta =
+        parseInt(properties['ro.build.version.preview_sdk'], 10) || 0
+      var previewLevel = level + previewDelta
+
+      var sdk = {
+        level: level
+      , previewDelta: previewDelta
+      , previewLevel: previewLevel
+      , release: properties['ro.build.version.release']
+      }
+
+      if (sdk.previewDelta) {
+        log.info(
+          'Supports SDK %s (base %s, preview delta +%s)'
+        , sdk.previewLevel
+        , sdk.level
+        , sdk.previewDelta
+        )
+      }
+      else {
+        log.info('Supports SDK %s', sdk.level)
+      }
+
+      return sdk
+    })()
+  })