Ability to Import SSL Certs into Bluemix Custom Domain Merged

Did you review the BX CLI options?

$ bx app | grep domain
   bx app - Manage Cloud Foundry applications and application related domains, routes and certificates
   domain-cert              List certificate info for the specified domain
   domain-cert-add          Add certificate to the specified domain in current organization
   domain-cert-remove       Remove certificate from the specified domain in current organization
   domains                  List domains in the current org
   domain-create            Create a domain in an org for later use
   domain-delete            Delete a domain
   shared-domain-create     Create a domain that can be used by all orgs
   shared-domain-delete     Delete a shared domain

You can load a cert for a custom CF domain:

NAME:
   domain-cert-add - Add certificate to the specified domain in current organization

USAGE:
   bx app domain-cert-add DOMAIN -k PRIVATE_KEY_FILE -c CERT_FILE [-p PASSWORD] [-i INTERMEDIATE_CERT_FILE] [-t TRUST_STORE_FILE]

OPTIONS:
   -k value  Private key file location
   -c value  Certificate file location
   -p value  Password for the certificate
   -i value  Intermediate certificate file location
   -t value  Trust store file location

You can review a cert loaded for a custom CF domain:

NAME:
   domain-cert - List certificate info for the specified domain

USAGE:
   bx app domain-cert DOMAIN

Net: I think you get what you want if you use the BX CLI