fix: specify bootstrap image for mock configs (#1442) (#1449)

(cherry picked from commit c2676b7a1a)

# Conflicts:
#	anda/terra/mock-configs/terra-mock-configs.spec

anda/terra/mock-configs/terra-mock-configs.spec

@@ -1,5 +1,5 @@
 Name:           terra-mock-configs
-Version:        7
+Version:        9
 Release:        1%{?dist}
 Summary:        Mock configs for Terra repos
 

anda/terra/mock-configs/terra.tpl

@@ -4,6 +4,7 @@ config_opts['macros']['%dist'] = '.fc{{ releasever }}'
 config_opts['chroot_setup_cmd'] = 'install @buildsys-build'
 config_opts['package_manager'] = 'dnf5'
 config_opts['extra_chroot_dirs'] = [ '/run/lock', ]
+config_opts['bootstrap_image'] = 'registry.fedoraproject.org/fedora:{{ releasever }}'
 config_opts['mirrored'] = True
 config_opts['plugin_conf']['root_cache_enable'] = True
 config_opts['plugin_conf']['yum_cache_enable'] = True