repopick: use https by default for repopicking

Change-Id: Iae1fde3515b0377a2b9253102c82d28b0fdaca4a
diff --git a/build/tools/repopick.py b/build/tools/repopick.py
index 1e3b6b0..b571f2b 100755
--- a/build/tools/repopick.py
+++ b/build/tools/repopick.py
@@ -123,7 +123,7 @@
 
 if __name__ == '__main__':
     # Default to LineageOS Gerrit
-    default_gerrit = 'http://review.lineageos.org'
+    default_gerrit = 'https://review.lineageos.org'
 
     parser = argparse.ArgumentParser(formatter_class=argparse.RawDescriptionHelpFormatter, description=textwrap.dedent('''\
         repopick.py is a utility to simplify the process of cherry picking