Add mock-data for pool requests

lib/fog/proxmox/compute/requests/next_vmid.rb

@@ -35,7 +35,9 @@ def next_vmid(options = {})
 
       # class Mock next_vmid collection
       class Mock
-        def next_vmid; end
+        def next_vmid(options = {})
+          101
+        end
       end
     end
   end

lib/fog/proxmox/identity/requests/get_pool.rb

@@ -34,7 +34,12 @@ def get_pool(poolid)
 
       # class Mock get_pool collection
       class Mock
-        def get_pool(poolid); end
+        def get_pool(poolid)
+          {
+            'members' => [],
+            'comment' => 'This pool is just for testing'
+          }
+        end
       end
     end
   end

lib/fog/proxmox/identity/requests/list_pools.rb

@@ -34,7 +34,14 @@ def list_pools
 
       # class Mock list_pools request
       class Mock
-        def list_pools; end
+        def list_pools
+          [
+            {
+              'poolid' => 'TestPool',
+              'comment' => 'This pool is just for testing'
+            }
+          ]
+        end
       end
     end
   end