(QENG-124) get rid of add_master_entry

- execution of add_master_entry has been off by default for a while, so
  we know that this code is no longer necessary, this is just clean up
(MAINT) Add PE 3.4 installer answers module.

Also adds spec tests.

Signed-off-by: Wayne <wayne@puppetlabs.com>
Merge branches 'feature/curl-retries', 'feature/ezbake-utils' and 'feature/pe-34-answers' into merged
Merge remote-tracking branch 'anodelman/maint' into merged