manifest: explicitly define the AOSP remote

Change-Id: I2c0aeb2d4951c6d71ee0f8c05925fb8fccef4ea5
Signed-off-by: Jacob Whatley <jacob.whatley91@gmail.com>

default.xml

@@ -2,7 +2,7 @@
 <manifest>
 
   <remote  name="aosp"
-           fetch=".."
+           fetch="https://android.googlesource.com"
            review="https://android-review.googlesource.com/" />
   <default revision="refs/tags/android-8.0.0_r4"
            remote="aosp"