Use .prepare_haf_image template for all building haf jobs

Also:

Run several tests in container (by passing option 'execute-maintenence-script') There is no need to build hfm separately as .prepare_haf_image handles this build. However there is separate job for functional tests for hfm. Postgres with hfm is always using prepared image (this can be either service or container with job) so there is only one script where hfm is installed