[pgm] Add option --tags for ls-remote

Bug: 444072
Change-Id: I52b470924609fc201e078d9d232aad257506728d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/LsRemoteTest.java

 				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/heads/test",
 				"" }, result.toArray());
 	}
+
+	@Test
+	public void testLsRemoteTags() throws Exception {
+		final List<String> result = CLIGitCommand.execute(
+				"git ls-remote --tags " + db.getDirectory(), db);
+		assertArrayEquals(new String[] {
+				"efc02078d83a5226986ae917323acec7e1e8b7cb	refs/tags/tag1",
+				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/tags/tag1^{}",
+				"4e4b837e0fd4ba83c003678b03592dc1509a4115	refs/tags/tag2",
+				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/tags/tag2^{}",
+				"489384bf8ace47522fe32093d2ceb85b65a6cbb1	refs/tags/tag3",
+				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/tags/tag3^{}",
+				"" }, result.toArray());
+	}
+
+	@Test
+	public void testLsRemoteHeadsTags() throws Exception {
+		final List<String> result = CLIGitCommand.execute(
+				"git ls-remote --heads --tags " + db.getDirectory(), db);
+		assertArrayEquals(new String[] {
+				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/heads/master",
+				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/heads/test",
+				"efc02078d83a5226986ae917323acec7e1e8b7cb	refs/tags/tag1",
+				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/tags/tag1^{}",
+				"4e4b837e0fd4ba83c003678b03592dc1509a4115	refs/tags/tag2",
+				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/tags/tag2^{}",
+				"489384bf8ace47522fe32093d2ceb85b65a6cbb1	refs/tags/tag3",
+				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/tags/tag3^{}",
+				"" }, result.toArray());
+	}
+
 }

org.eclipse.jgit.pgm/resources/org/eclipse/jgit/pgm/internal/CLIText.properties

 usage_IndexPack=Build pack index file for an existing packed archive
 usage_LsRemote=List references in a remote repository
 usage_lsRemoteHeads=Show only refs starting with refs/heads
+usage_lsRemoteTags=Show only refs starting with refs/tags
 usage_LsTree=List the contents of a tree object
 usage_MakeCacheTree=Show the current cache tree structure
 usage_MergeBase=Find as good common ancestors as possible for a merge

org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/LsRemote.java

 	@Option(name = "--heads", usage = "usage_lsRemoteHeads")
 	private boolean heads;
 
+	@Option(name = "--tags", usage = "usage_lsRemoteTags", aliases = { "-t" })
+	private boolean tags;
+
 	@Option(name = "--timeout", metaVar = "metaVar_service", usage = "usage_abortConnectionIfNoActivity")
 	int timeout = -1;
 
 	@Override
 	protected void run() throws Exception {
 		LsRemoteCommand command = Git.lsRemoteRepository().setRemote(remote)
-				.setTimeout(timeout).setHeads(heads);
+				.setTimeout(timeout).setHeads(heads).setTags(tags);
 		TreeSet<Ref> refs = new TreeSet<Ref>(new Comparator<Ref>() {
 
 			public int compare(Ref r1, Ref r2) {