qam: Add helper function for counting PUBLISH_* variables

Add a helper function which will return if (and how many) PUBLISH_*
veriables are set on the job. This can be used for deciding whether
minor issues should cause a test to fail, or softfail in order to
allow dependent jobs to run.

lib/qam.pm

@@ -19,7 +19,8 @@ use version_utils qw(is_sle is_transactional);
 
 our @EXPORT
   = qw(capture_state check_automounter is_patch_needed add_test_repositories disable_test_repositories enable_test_repositories
-  add_extra_customer_repositories ssh_add_test_repositories remove_test_repositories advance_installer_window get_patches check_patch_variables add_repo_if_not_present);
+  add_extra_customer_repositories ssh_add_test_repositories remove_test_repositories advance_installer_window get_patches check_patch_variables add_repo_if_not_present
+  has_published_assets);
 use constant ZYPPER_PACKAGE_COL => 1;
 use constant OLD_ZYPPER_STATUS_COL => 4;
 use constant ZYPPER_STATUS_COL => 5;
@@ -243,4 +244,9 @@ sub check_patch_variables {
     }
 }
 
+# Return count of PUBLISH_* job variables
+sub has_published_assets {
+    return scalar grep { m/^PUBLISH_/ } keys %bmwqemu::vars;
+}
+
 1;