47432 Add label-light class to Kubernetes creation form labels

app/views/projects/clusters/user/_form.html.haml

 = form_for @cluster, url: user_namespace_project_clusters_path(@project.namespace, @project), as: :cluster do |field|
   = form_errors(@cluster)
   .form-group
-    = field.label :name, s_('ClusterIntegration|Kubernetes cluster name')
+    = field.label :name, s_('ClusterIntegration|Kubernetes cluster name'), class: 'label-light'
     = field.text_field :name, class: 'form-control', placeholder: s_('ClusterIntegration|Kubernetes cluster name')
   .form-group
-    = field.label :environment_scope, s_('ClusterIntegration|Environment scope')
+    = field.label :environment_scope, s_('ClusterIntegration|Environment scope'), class: 'label-light'
     = field.text_field :environment_scope, class: 'form-control', readonly: !has_multiple_clusters?(@project), placeholder: s_('ClusterIntegration|Environment scope')
 
   = field.fields_for :platform_kubernetes, @cluster.platform_kubernetes do |platform_kubernetes_field|
     .form-group
-      = platform_kubernetes_field.label :api_url, s_('ClusterIntegration|API URL')
+      = platform_kubernetes_field.label :api_url, s_('ClusterIntegration|API URL'), class: 'label-light'
       = platform_kubernetes_field.text_field :api_url, class: 'form-control', placeholder: s_('ClusterIntegration|API URL')
 
     .form-group
-      = platform_kubernetes_field.label :ca_cert, s_('ClusterIntegration|CA Certificate')
+      = platform_kubernetes_field.label :ca_cert, s_('ClusterIntegration|CA Certificate'), class: 'label-light'
       = platform_kubernetes_field.text_area :ca_cert, class: 'form-control', placeholder: s_('ClusterIntegration|Certificate Authority bundle (PEM format)')
 
     .form-group
-      = platform_kubernetes_field.label :token, s_('ClusterIntegration|Token')
+      = platform_kubernetes_field.label :token, s_('ClusterIntegration|Token'), class: 'label-light'
       = platform_kubernetes_field.text_field :token, class: 'form-control', placeholder: s_('ClusterIntegration|Service token'), autocomplete: 'off'
 
     .form-group
-      = platform_kubernetes_field.label :namespace, s_('ClusterIntegration|Project namespace (optional, unique)')
+      = platform_kubernetes_field.label :namespace, s_('ClusterIntegration|Project namespace (optional, unique)'), class: 'label-light'
       = platform_kubernetes_field.text_field :namespace, class: 'form-control', placeholder: s_('ClusterIntegration|Project namespace')
 
     .form-group

app/views/projects/clusters/user/_show.html.haml

 = form_for @cluster, url: namespace_project_cluster_path(@project.namespace, @project, @cluster), as: :cluster do |field|
   = form_errors(@cluster)
   .form-group
-    = field.label :name, s_('ClusterIntegration|Kubernetes cluster name')
+    = field.label :name, s_('ClusterIntegration|Kubernetes cluster name'), class: 'label-light'
     = field.text_field :name, class: 'form-control', placeholder: s_('ClusterIntegration|Kubernetes cluster name')
 
   = field.fields_for :platform_kubernetes, @cluster.platform_kubernetes do |platform_kubernetes_field|
     .form-group
-      = platform_kubernetes_field.label :api_url, s_('ClusterIntegration|API URL')
+      = platform_kubernetes_field.label :api_url, s_('ClusterIntegration|API URL'), class: 'label-light'
       = platform_kubernetes_field.text_field :api_url, class: 'form-control', placeholder: s_('ClusterIntegration|API URL')
 
     .form-group
-      = platform_kubernetes_field.label :ca_cert, s_('ClusterIntegration|CA Certificate')
+      = platform_kubernetes_field.label :ca_cert, s_('ClusterIntegration|CA Certificate'), class: 'label-light'
       = platform_kubernetes_field.text_area :ca_cert, class: 'form-control', placeholder: s_('ClusterIntegration|Certificate Authority bundle (PEM format)')
 
     .form-group
-      = platform_kubernetes_field.label :token, s_('ClusterIntegration|Token')
+      = platform_kubernetes_field.label :token, s_('ClusterIntegration|Token'), class: 'label-light'
       .input-group
         = platform_kubernetes_field.text_field :token, class: 'form-control js-cluster-token', type: 'password', placeholder: s_('ClusterIntegration|Token'), autocomplete: 'off'
         %span.input-group-append.clipboard-addon
@@ -23,7 +23,7 @@
               = s_('ClusterIntegration|Show')
 
     .form-group
-      = platform_kubernetes_field.label :namespace, s_('ClusterIntegration|Project namespace (optional, unique)')
+      = platform_kubernetes_field.label :namespace, s_('ClusterIntegration|Project namespace (optional, unique)'), class: 'label-light'
       = platform_kubernetes_field.text_field :namespace, class: 'form-control', placeholder: s_('ClusterIntegration|Project namespace')
 
     .form-group