Some integration tweaks for selfupdate steps with new bash env builder.

src/test/cucumber/gvm/self_update.feature

@@ -1,9 +1,10 @@
 Feature: Self Update
 
   Background:
-    Given an outdated system
-    And the internet is reachable
+    Given the internet is reachable
     And an initialised environment
+    And an outdated system
+    And the system is bootstrapped
 
   Scenario: Upgrade an outdated installation
     When I enter "gvm selfupdate"

src/test/steps/gvm/selfupdate_steps.groovy

@@ -1,5 +1,7 @@
 package gvm
 
+import cucumber.runtime.PendingException
+
 import static cucumber.api.groovy.EN.*
 
 And(~'^the configuration file has been primed with "([^"]*)"$') { String content ->
@@ -70,3 +72,4 @@ Given(~'^an empty configuration file$') {->
     def configFile = "$gvmDir/ext/config" as File
     configFile.text = ""
 }
+