app/gerrit: import OAuth provider and add SSO support

This change:

 - imports gerrit-oauth-provider from upstream
 - adds sso.hackerspae.pl support to it

Change-Id: I92e7053614a9297bf1ced3aac044c0002acd836a
diff --git a/app/gerrit/gerrit-oauth-provider/external_plugin_deps.bzl b/app/gerrit/gerrit-oauth-provider/external_plugin_deps.bzl
new file mode 100644
index 0000000..e560344
--- /dev/null
+++ b/app/gerrit/gerrit-oauth-provider/external_plugin_deps.bzl
@@ -0,0 +1,14 @@
+load("//tools/bzl:maven_jar.bzl", "maven_jar")
+
+def external_plugin_deps(omit_commons_codec = True):
+    maven_jar(
+        name = "scribe",
+        artifact = "org.scribe:scribe:1.3.7",
+        sha1 = "583921bed46635d9f529ef5f14f7c9e83367bc6e",
+    )
+    if not omit_commons_codec:
+        maven_jar(
+            name = "commons-codec",
+            artifact = "commons-codec:commons-codec:1.4",
+            sha1 = "4216af16d38465bbab0f3dff8efa14204f7a399a",
+        )