Add system test for fixed checksum matching

system/t04_mirror/UpdateMirror19Test_gold

@@ -0,0 +1,11 @@
+Downloading http://packages.pagerduty.com/pdagent/deb/InRelease...
+Downloading http://packages.pagerduty.com/pdagent/deb/Release...
+Downloading http://packages.pagerduty.com/pdagent/deb/Release.gpg...
+gpgv:  RSA key ID F8253540
+gpgv: Good signature from "Package Maintainer (PagerDuty, Inc.) <packages@pagerduty.com>"
+Downloading & parsing package files...
+Downloading http://packages.pagerduty.com/pdagent/deb/Packages.gz...
+Building download queue...
+Download queue: 13 items (1.66 MiB)
+
+Mirror `pagerduty` has been successfully updated.

system/t04_mirror/update.py

@@ -311,3 +311,19 @@ class UpdateMirror18Test(BaseTest):
         super(UpdateMirror18Test, self).check()
         # check pool
         self.check_exists('pool/c7/6b/4bd12fd92e4dfe1b55b18a67a669_libboost-program-options-dev_1.49.0.1_i386.deb')
+
+
+class UpdateMirror19Test(BaseTest):
+    """
+    update mirrors: correct matching of Release checksums
+    """
+    longTest = False
+    fixtureGpg = True
+    fixtureCmds = [
+        "aptly mirror create --keyring=aptlytest.gpg pagerduty http://packages.pagerduty.com/pdagent deb/"
+    ]
+    runCmd = "aptly mirror update --keyring=aptlytest.gpg pagerduty"
+    outputMatchPrepare = filterOutSignature
+
+    def output_processor(self, output):
+        return "\n".join(line for line in output.split("\n") if ".deb" not in line)