Correct enabled property in helmfile list

[hikhvar]

Use the value of the condition field instead of the installed field of a release in the enabled column of helmfile list.
The value of the installed field is shown in a new installed column.

Fixes #1920

New output of helmfile list:

NAME      	NAMESPACE	ENABLED	INSTALLED	LABELS                    	CHART   	VERSION
myrelease1	         	true   	false    	common:label,id:myrelease1	mychart1	       
myrelease2	         	false  	true     	common:label              	mychart1	       
myrelease3	         	true   	true     	                          	mychart1	       
myrelease4	         	true   	true     	id:myrelease1             	mychart1	       

for Helmfile:

commonLabels:
  common: label
environments:
  default:
    values:
     - myrelease2:
         enabled: false
releases:
- name: myrelease1
  chart: mychart1
  installed: no
  labels:
    id: myrelease1
- name: myrelease2
  chart: mychart1
  condition: myrelease2.enabled
- name: myrelease3
  chart: mychart1
  installed: yes
- name: myrelease4
  chart: mychart1
  labels:
    id: myrelease1

[zifter]

any updates to this isssue?

[mumoshu]

I'm still unsure if INSTALLED is the right word because it may be misinterpreted like a flag that indicates if it is actually installed onto the target cluster or not.

But this is much better than the current state! Let's go ahead. Thanks for your contribution.