Revert "Temporarily start using the public registry again"
Revert "Temporarily start using the public registry again"

In 0b00bd6abd3478f9b904e5561338f7216d0e2911 we added back our npmrc
files pointing to our reverse proxy cache. Manual testing confirmed
it to be working. Lets start having our jobs do the same.

This reverts commit 26edd714613ffcf1c1436a335adbea656a9eb101.

Change-Id: Id308190ff0e938a4b010455275344aff3af3b2a6
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

openstack-infra/project-config,openstack-infra/project-config