Rename specific_for to available_for:

Feedback from:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/4093#note_12413950

app/controllers/projects/runners_controller.rb

@@ -7,7 +7,7 @@ class Projects::RunnersController < Projects::ApplicationController
   def index
     @runners = project.runners.ordered
     @specific_runners = current_user.ci_authorized_runners.
-      specific_for(project).ordered.page(params[:page]).per(20)
+      available_for(project).ordered.page(params[:page]).per(20)
     @shared_runners = Ci::Runner.shared.active
     @shared_runners_count = @shared_runners.count(:all)
   end

app/models/ci/runner.rb

@@ -26,7 +26,7 @@ module Ci
         .where("ci_runner_projects.gl_project_id = :project_id OR ci_runners.is_shared = true", project_id: project_id)
     end
 
-    scope :specific_for, ->(project) do
+    scope :available_for, ->(project) do
       # TODO: That `to_sql` is needed to workaround a weird Rails bug.
       #       Without that, placeholders would miss one and couldn't match.
       where(locked: false).

spec/models/ci/runner_spec.rb

@@ -259,7 +259,7 @@ describe Ci::Runner, models: true do
     end
   end
 
-  describe '.specific_for' do
+  describe '.available_for' do
     let(:runner) { create(:ci_runner) }
     let(:project) { create(:project) }
     let(:another_project) { create(:project) }
@@ -274,13 +274,13 @@ describe Ci::Runner, models: true do
       end
 
       context 'should not give owned runner' do
-        subject { Ci::Runner.specific_for(project) }
+        subject { Ci::Runner.available_for(project) }
 
         it { is_expected.to be_empty }
       end
 
       context 'should not give shared runner' do
-        subject { Ci::Runner.specific_for(another_project) }
+        subject { Ci::Runner.available_for(another_project) }
 
         it { is_expected.to be_empty }
       end
@@ -288,13 +288,13 @@ describe Ci::Runner, models: true do
 
     context 'with unlocked runner' do
       context 'should not give owned runner' do
-        subject { Ci::Runner.specific_for(project) }
+        subject { Ci::Runner.available_for(project) }
 
         it { is_expected.to be_empty }
       end
 
       context 'should give a specific runner' do
-        subject { Ci::Runner.specific_for(another_project) }
+        subject { Ci::Runner.available_for(another_project) }
 
         it { is_expected.to contain_exactly(runner) }
       end
@@ -306,13 +306,13 @@ describe Ci::Runner, models: true do
       end
 
       context 'should not give owned runner' do
-        subject { Ci::Runner.specific_for(project) }
+        subject { Ci::Runner.available_for(project) }
 
         it { is_expected.to be_empty }
       end
 
       context 'should not give a locked runner' do
-        subject { Ci::Runner.specific_for(another_project) }
+        subject { Ci::Runner.available_for(another_project) }
 
         it { is_expected.to be_empty }
       end