- set config flags to disable zstd in platforms that don't have the
  library baked in
  - currently only centos6 and centos7 have zstd provided in the build
    images
- delete the suse10 config flags, because it is no longer a supported
  platform
- add EXTRA_CONFIG_FLAGS to deb_create_package.bash
Co-authored-by: NTaylor Vesely <tvesely@pivotal.io>
Co-authored-by: NBen Christel <bchristel@pivotal.io>
Co-authored-by: NKaren Huddleston <khuddleston@pivotal.io>