Add lost "android_gcm_sender_id" option

Author: norkunas

src/Resolver/AppResolver.php

@@ -23,6 +23,8 @@ public function resolve(array $data)
             ->setAllowedTypes('apns_p12_password', 'string')
             ->setDefined('gcm_key')
             ->setAllowedTypes('gcm_key', 'string')
+            ->setDefined('android_gcm_sender_id')
+            ->setAllowedTypes('android_gcm_sender_id', 'string')
             ->setDefined('chrome_key')
             ->setAllowedTypes('chrome_key', 'string')
             ->setDefined('safari_apns_p12')

tests/OneSignal/Tests/Resolver/AppResolverTest.php

@@ -25,6 +25,7 @@ public function testResolveWithValidValues()
             'apns_p12' => 'value',
             'apns_p12_password' => 'value',
             'gcm_key' => 'value',
+            'android_gcm_sender_id' => 'value',
             'chrome_key' => 'value',
             'safari_apns_p12' => 'value',
             'chrome_web_key' => 'value',
@@ -61,6 +62,7 @@ public function wrongValueTypesProvider()
             [['apns_p12' => 666]],
             [['apns_p12_password' => 666]],
             [['gcm_key' => 666]],
+            [['android_gcm_sender_id' => 666]],
             [['chrome_key' => 666]],
             [['safari_apns_p12' => 666]],
             [['chrome_web_key' => 666]],