storeconfigs not working with puppet apply

We enable storeconfigs with PuppetDB in our puppet master, and use
Puppet modules which require storeconfigs, but do not configure
puppet apply on the build node / AIO to use storeconfigs. Add
storeconfigs parameters to the [main] section of puppet.conf so that
puppet apply will pick them up also.

Closes-Bug: #1282281
Merge pull request #43 from CiscoSystems/bugs/1282281

storeconfigs not working with puppet apply