include non-APKs that match metadata and fdroid-generated filenames

Since it is now possible to build and include arbitrary files, like OTA
update ZIP files, the update procedure needs to look for non-APK files that
match the packageName_versionCode pattern of fdroid-generated files.

!193
admin#14
privileged-extension#9

tests/metadata/fake.ota.update.txt

@@ -0,0 +1,42 @@
+Categories:System
+License:Apache-2.0
+Web Site:https://f-droid.org
+Source Code:https://gitlab.com/fdroid/privileged-extension
+Issue Tracker:https://gitlab.com/fdroid/privileged-extension/issues
+Donate:https://f-droid.org/about
+
+Auto Name:Fake OTA Update
+Summary:Tests whether OTA ZIP files are being include
+Description:
+F-Droid can make use of system privileges or permissions to
+install, update and remove applications on its own. The only way to obtain those
+privileges is to become a system app.
+
+This is where the Privileged Extension comes in - being a separate app and much
+smaller, it can be installed as a system app and communicate with the main app
+via AIDL IPC.
+
+This has several advantages:
+
+* Reduced disk usage in the system partition
+* System updates don't remove F-Droid
+* The process of installing into system via root is safer
+
+This is packaged as an OTA (Over-The-Air) update ZIP file.  It must be installed
+using TWRP or other Android recovery that can flash updates to the system from
+the /data/data/org.fdroid.fdroid folder on the /data partition. The standalone
+APK is called F-Droid Privileged Extension.
+.
+
+Repo Type:git
+Repo:https://gitlab.com/fdroid/privileged-extension.git
+
+Build:0.2.1,2000
+    commit=0.2.1
+    output=app/build/distributions/FDroidPrivilegedExtensionFromBinaries-0.2.1.zip
+    build=gradle assembleUpdateZipFromBinariesDebug
+
+Auto Update Mode:Version %v
+Update Check Mode:Tags
+Current Version:0.2.1
+Current Version Code:2000