beaker: Update APT repos to point to beaker

Change-Id: I5c7662de4de44b550f34018a6e5b03027adae259
diff --git a/mendel.list b/mendel.list
index beb8cef..f3af59b 100644
--- a/mendel.list
+++ b/mendel.list
@@ -1,4 +1,4 @@
-deb [arch=armhf,arm64 trusted=yes] https://packages.cloud.google.com/apt mendel-animal main
-deb-src [trusted=yes] https://packages.cloud.google.com/apt mendel-animal main
-deb [arch=armhf,arm64 trusted=yes] https://packages.cloud.google.com/apt mendel-bsp-enterprise-animal main
-deb-src [trusted=yes] https://packages.cloud.google.com/apt mendel-bsp-enterprise-animal main
+deb [arch=armhf,arm64 trusted=yes] https://packages.cloud.google.com/apt mendel-beaker main
+deb-src [trusted=yes] https://packages.cloud.google.com/apt mendel-beaker main
+deb [arch=armhf,arm64 trusted=yes] https://packages.cloud.google.com/apt mendel-bsp-enterprise-beaker main
+deb-src [trusted=yes] https://packages.cloud.google.com/apt mendel-bsp-enterprise-beaker main