Add apt-key for packages.cloud.google.com

Change-Id: I84a5c09c389909bfb7bdfe1060c3a9e86b02e3b7

Makefile

diff --git a/Makefile b/Makefile
index 5ab2006..6b9760b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
-aiy-board-keyring.gpg: linux_signing_key.pub
-	gpg --no-keyring --import-options import-export --import < $< > $@
+aiy-board-keyring.gpg: cloud-key.gpg linux_signing_key.pub
+	gpg --no-keyring --import-options import-export --import $^ > $@
 
 build: aiy-board-keyring.gpg
 
@@ -10,4 +10,4 @@
 clean:
 	rm -f aiy-board-keyring.gpg
 
-.PHONY: build install clean
\ No newline at end of file
+.PHONY: build install clean

cloud-key.gpg

diff --git a/cloud-key.gpg b/cloud-key.gpg
new file mode 100644
index 0000000..37fc65d
--- /dev/null
+++ b/cloud-key.gpg
Binary files differ