Rectify issues with tests and status

* Since the server will remain in ACTIVE state for up to a few minutes, do not
  set the status (to prevent a situation where the state bounces between
  PREP_RESCUE and ACTIVE).
* Add format() test for the call to #rescue
* Remove extraneous sleep from the test against #unrescue
* Remove immediate tests for state.  Rather, depend upon the wait_for function.

lib/fog/rackspace/models/compute_v2/server.rb

@@ -467,7 +467,6 @@ module Fog
           requires :identity
           data = service.rescue_server(identity)
           merge_attributes(data.body)
-          self.state = RESCUE
           true
         end
 

lib/fog/rackspace/requests/compute_v2/rescue_server.rb

@@ -33,7 +33,9 @@ module Fog
         def rescue_server(server_id)
           server = self.data[:servers][server_id]
           server["status"] = "RESCUE"
-          response(:status => 200)
+          admin_pass = Fog::Mock.random_letters(12)
+          server_response = { 'adminPass' => admin_pass }
+          response(:status => 200, :body => server_response)
         end
       end
     end

tests/rackspace/models/compute_v2/server_tests.rb

@@ -142,11 +142,9 @@ Shindo.tests('Fog::Compute::RackspaceV2 | server', ['rackspace']) do
     @instance.wait_for(timeout=1500)  { ready? }
     tests('#rescue').succeeds do
       @instance.rescue
-      returns('RESCUE') { @instance.state }
     end
 
     @instance.wait_for(timeout=1500) { ready?('RESCUE') }
-    sleep 60  unless Fog.mocking?
     tests('#unrescue').succeeds do
       @instance.unrescue
     end

tests/rackspace/requests/compute_v2/server_tests.rb

@@ -54,6 +54,9 @@ Shindo.tests('Fog::Compute::RackspaceV2 | server_tests', ['rackspace']) do
     }
   }
 
+  rescue_server_format = {
+    'adminPass' => Fog::Nullable::String
+  }
 
   tests('success') do
 
@@ -124,7 +127,7 @@ Shindo.tests('Fog::Compute::RackspaceV2 | server_tests', ['rackspace']) do
     end
     wait_for_server_state(service, server_id, 'ACTIVE', 'ERROR')
 
-    tests('#rescue_server').succeeds do
+    tests('#rescue_server').formats(rescue_server_format, false) do
       service.rescue_server(server_id)
     end
     wait_for_server_state(service, server_id, 'RESCUE', 'ACTIVE')