meta-google: Add glome-login and glome-config

We have to use glome-config since the sample config is removed in
glome recipe. As a result, now glome depends on glome-config.

The platform also needs to overwrite these variables in their
bbappend files:
- glome-login.bb
  * GLOME_FALLBACK_SERV
  * GLOME_FALLBACK_OBJ
  * GLOME_HOSTNAME_SUFFIX
  * GLOME_BOARDSN_KEY
- glome-config.bb
  * GLOME_PUBLIC_KEY
  * GLOME_KEY_VERSION
  * GLOME_URL_PREFIX

Tested:
1) `bitbake obmc-phosphor-image` build passes
2) inplace update the image on a real machine
3) connect to it
The glome is enabled and login is successful

Signed-off-by: Leo Tu <leotu@google.com>
Change-Id: I21a48cbdcfea67772f143b4fc115f717e6d7cbc5
diff --git a/meta-google/recipes-google/console/glome-config/config.in b/meta-google/recipes-google/console/glome-config/config.in
new file mode 100644
index 0000000..291f6a5
--- /dev/null
+++ b/meta-google/recipes-google/console/glome-config/config.in
@@ -0,0 +1,8 @@
+# This is the configuration file for serial console authentication with glome.
+# /usr/sbin/glome-login tries to read this file on startup at its canonical
+# location /etc/glome/config.
+
+[service]
+key = @PUBLIC_KEY@
+key-version = @KEY_VERSION@
+url-prefix = @URL_PREFIX@