Merge pull request ManageIQ#70 from agrare/fix_terraform_runner_available

Fix `Terraform::Runner.available?`

Author: Fryguy

lib/terraform/runner.rb

@@ -9,7 +9,7 @@ class << self
       def available?
         return @available if defined?(@available)
 
-        response = terraform_runner_client.get('api/ping')
+        response = terraform_runner_client.get('ping')
         @available = response.status == 200
       rescue
         @available = false

spec/lib/terraform/runner_spec.rb

@@ -19,7 +19,7 @@
     before do
       ENV["TERRAFORM_RUNNER_URL"] = "https://1.2.3.4:7000"
 
-      stub_request(:get, "https://1.2.3.4:7000/api/ping")
+      stub_request(:get, "https://1.2.3.4:7000/ping")
         .to_return(:status => 200, :body => {'count' => 0}.to_json)
     end