dvars in scopes

    scopes:
    - name: global
      vars:
        a: global-a
        b: global-b
        c: global-c
        e: global-e
      dvars:
      - name: da
        value: "{{.a}}"
      - name: dab
        value: "{{.a}}-and-{{.b}}"
    - name: nonprod
      members:
      - dev
      - staging
      vars:
        a: non-prod-a
        b: non-prod-b
        c: non-prod-c
        d: non-prod-d
      dvars:
      - name: dvar_np_a
        value: "{{.a}}"
      - name: dab
        value: "{{.a}}-and-{{.b}}"
    - name: staging
      vars:
        a: staging-a
        b: staging-b
    tasks:
    - name: task
      task:
      - func: shell
        do:
        - echo "cmd1:da -> {{.da}}"
        - echo "cmd2:dab -> {{.dab}}"
        - echo "cmd3:{{.dvar_np_a}}"
    

    loading [Config]:  ./tests/functests/upconfig.yml
    Main config:
                 Version -> 1.0.0
                  RefDir -> ./tests/functests
                 WorkDir -> cwd
              AbsWorkDir -> /up_project/up
                TaskFile -> c0029
                 Verbose -> vvv
              ModuleName -> self
               ShellType -> /bin/sh
           MaxCallLayers -> 8
                 Timeout -> 3600000
     MaxModuelCallLayers -> 256
               EntryTask -> task
      ModRepoUsernameRef -> 
      ModRepoPasswordRef -> 
    work dir: /up_project/up
    -exec task: task
    loading [Task]:  ./tests/functests/c0029
    module: [self], instance id: [dev], exec profile: []
    profile -  envVars:
    
    (*core.Cache)({
    })
    
    Task1: [task ==> task:  ]
    -Step1:
    self: final context exec vars:
    
    (*core.Cache)({
      "dvar_np_a": "non-prod-a",
      "c": "non-prod-c",
      "dab": "non-prod-a-and-non-prod-b",
      "b": "non-prod-b",
      "da": "global-a",
      "d": "non-prod-d",
      "e": "global-e",
      "up_runtime_task_layer_number": 0,
      "a": "non-prod-a"
    })
    
    cmd( 1):
    echo "cmd1:da -> {{.da}}"
    
    -
    cmd1:da -> global-a
    
    -
     .. ok
    cmd( 2):
    echo "cmd2:dab -> {{.dab}}"
    
    -
    cmd2:dab -> non-prod-a-and-non-prod-b
    
    -
     .. ok
    cmd( 3):
    echo "cmd3:{{.dvar_np_a}}"
    
    -
    cmd3:non-prod-a
    
    -
     .. ok
    . ok