FIx requests values formatting in describe command

[nitishkumar71]

Description

Printing types.FunctionResources has been fixed for terminal

Motivation and Context

• I have raised an issue to propose this change (required)
  Closes FunctionResources print is not correctly formatted in describe command #988

How Has This Been Tested?

1. Deploy function with cpu request and memory request
   faas-cli store deploy --cpu-request 50Mi --memory-request 10Mi nodeinfo
2. Describe function using faas-cli describe nodeinfo. The output produced should be properly formatted.

Name:               nodeinfo
Status:             Not Ready
Replicas:           1
Available Replicas: 0
Invocations:        0
Image:              ghcr.io/openfaas/nodeinfo:latest
Function Process:   <default>
URL:                http://127.0.0.1:8080/function/nodeinfo
Async URL:          http://127.0.0.1:8080/async-function/nodeinfo
Labels:
 faas_function: nodeinfo
Annotations:
 prometheus.io.scrape: false
Requests:
 CPU: 50Mi
 Memory: 10Mi

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have signed-off my commits with git commit -s
• I have added tests to cover my changes.
• All new and existing tests passed.

[alexellis]

Thank you @nitishkumar71 👍