Import-cert broken for creating nodes on mac

Was not able to create a node due to Invalid Certificate Chain / Invalid password errors. The screenshot below indicates the changes to import-cert that fixed this issue for me.
<img width="741" alt="Screen Shot 2019-07-23 at 2 51 19 PM" src="https://user-images.githubusercontent.com/28516523/61738927-5cac4880-ad59-11e9-9210-9200ef1061d0.png">
