Fix new bugs
- ACCESS_KEY environment variable didn't propogate
  into ctdb due to script invoking was done with in
  ctdb namespace. Provide a new file 'ec2-access-key'
- ec2-eni-functions had an issue grabbing 'NIC' due
  to parsing issue

Signed-off-by: Harshavardhana <fharshav@redhat.com>