Revert "Upgrade JGit to 5.3.4.201908231101-r"

This reverts commit 068dc28e19.

Reason for revert: The JGit upgrade broke the build.

Bug: Issue 11373
Change-Id: I1992d275da6c6013f72b45114134cf79d326b9d1

java/com/google/gerrit/acceptance/StandaloneSiteTest.java

@@ -34,12 +34,9 @@ import com.google.gerrit.testing.ConfigSuite;
 import com.google.inject.Injector;
 import com.google.inject.Module;
 import java.io.File;
-import java.io.IOException;
 import java.util.Arrays;
 import java.util.Collections;
-import org.eclipse.jgit.errors.ConfigInvalidException;
 import org.eclipse.jgit.lib.Config;
-import org.eclipse.jgit.lib.StoredConfig;
 import org.eclipse.jgit.storage.file.FileBasedConfig;
 import org.eclipse.jgit.util.FS;
 import org.eclipse.jgit.util.SystemReader;
@@ -172,16 +169,6 @@ public abstract class StandaloneSiteTest {
           public int getTimezone(long when) {
             return oldSystemReader.getTimezone(when);
           }
-
-          @Override
-          public StoredConfig getUserConfig() throws IOException, ConfigInvalidException {
-            return oldSystemReader.getUserConfig();
-          }
-
-          @Override
-          public StoredConfig getSystemConfig() throws IOException, ConfigInvalidException {
-            return oldSystemReader.getSystemConfig();
-          }
         });
     return oldSystemReader;
   }

java/com/google/gerrit/server/util/time/TimeUtil.java

@@ -15,13 +15,10 @@
 package com.google.gerrit.server.util.time;
 
 import com.google.common.annotations.VisibleForTesting;
-import java.io.IOException;
 import java.sql.Timestamp;
 import java.time.Instant;
 import java.util.function.LongSupplier;
-import org.eclipse.jgit.errors.ConfigInvalidException;
 import org.eclipse.jgit.lib.Config;
-import org.eclipse.jgit.lib.StoredConfig;
 import org.eclipse.jgit.storage.file.FileBasedConfig;
 import org.eclipse.jgit.util.FS;
 import org.eclipse.jgit.util.SystemReader;
@@ -107,16 +104,6 @@ public class TimeUtil {
     public int getTimezone(long when) {
       return delegate.getTimezone(when);
     }
-
-    @Override
-    public StoredConfig getUserConfig() throws IOException, ConfigInvalidException {
-      return delegate.getUserConfig();
-    }
-
-    @Override
-    public StoredConfig getSystemConfig() throws IOException, ConfigInvalidException {
-      return delegate.getSystemConfig();
-    }
   }
 
   private TimeUtil() {}

lib/jgit/jgit.bzl

@@ -1,6 +1,6 @@
 load("//tools/bzl:maven_jar.bzl", "MAVEN_CENTRAL", "maven_jar")
 
-_JGIT_VERS = "5.3.4.201908231101-r"
+_JGIT_VERS = "5.3.1.201904271842-r"
 
 _DOC_VERS = _JGIT_VERS  # Set to _JGIT_VERS unless using a snapshot
 
@@ -40,25 +40,25 @@ def jgit_maven_repos():
         name = "jgit-lib",
         artifact = "org.eclipse.jgit:org.eclipse.jgit:" + _JGIT_VERS,
         repository = _JGIT_REPO,
-        sha1 = "9946eb0d678c964e3625f0e1a7e1b6570f8cd3b2",
+        sha1 = "dba85014483315fa426259bc1b8ccda9373a624b",
     )
     maven_jar(
         name = "jgit-servlet",
         artifact = "org.eclipse.jgit:org.eclipse.jgit.http.server:" + _JGIT_VERS,
         repository = _JGIT_REPO,
-        sha1 = "72a27084a3d94259a4db9cdd5d5216f336cd5ada",
+        sha1 = "3287341fca859340a00b51cb5dd3b78b8e532b39",
     )
     maven_jar(
         name = "jgit-archive",
         artifact = "org.eclipse.jgit:org.eclipse.jgit.archive:" + _JGIT_VERS,
         repository = _JGIT_REPO,
-        sha1 = "6c172f339a0e3b8ec41f1110c633e0f95fb50366",
+        sha1 = "3585027e83fb44a5de2c10ae9ddbf976593bf080",
     )
     maven_jar(
         name = "jgit-junit",
         artifact = "org.eclipse.jgit:org.eclipse.jgit.junit:" + _JGIT_VERS,
         repository = _JGIT_REPO,
-        sha1 = "0a0cecab312275f1a9a5d6a051db71158b4b22c7",
+        sha1 = "3d9ba7e610d6ab5d08dcb1e4ba448b592a34de77",
     )
 
 def jgit_dep(name):