ltmpl: Fix package logging format

epoch wasn't included in the lorax-packages.log, but arch is. And for
the debuginfo the epoch, including 0, *is* included. This should match
the previous output.

Resolves: rhbz#1815000
(cherry picked from commit d6ce9c907d)

src/pylorax/ltmpl.py

@@ -260,7 +260,7 @@ class LoraxTemplateRunner(TemplateRunner):
         pkgs = []
         debug_pkgs = []
         for p in list(self.dbo.transaction.install_set):
-            pkgs.append(f"{p.name}-{p.epoch}:{p.version}-{p.release}")
+            pkgs.append(f"{p.name}-{p.version}-{p.release}.{p.arch}")
             if available.filter(name=p.name+"-debuginfo"):
                 debug_pkgs.append(f"{p.name}-debuginfo-{p.epoch}:{p.version}-{p.release}")