1. Proposed title of this feature request

 A drop-down menu for OpenShift Namespace where the ImageStream resides, in Instantiate Template section.

2. What is the nature and description of the request?

  As of now, if we select a template from the catalog and click on Instatiate Template, it will show a page wherein we need to enter the required information. On the page we could see two namespace fields, one is the namespace in which the application needs to be deployed and another one is the OpenShift Namespace where the ImageStream resides.

For the field of the namespace where the application is to be deployed, we have a drop-down menu, however, the field where the ImageStream resides has a plain text field, which requires customers to feed in the data manually. 

3. Why does the customer need this? (List the business requirements here)

 While typing in the value it could cause errors, however, if we have a dropdown menu it could be much easier. Also, the name of the field is similar for both hence, it would be great if we could rename the second one to `ImageStream Namespace` or something of that sort to avoid confusion.

4. List any affected packages or components.

 OpenShift Webconsole.