Patch hostname in configuration file even if name is unsync

Ref https://github.com/GNS3/gns3-gui/issues/1889

tests/compute/iou/test_iou_vm.py

@@ -298,6 +298,14 @@ def test_change_name(vm, tmpdir):
     assert vm.name == "hello"
     with open(path) as f:
         assert f.read() == "hostname hello"
+    # support hostname not sync
+    vm.name = "alpha"
+    with open(path, 'w+') as f:
+        f.write("no service password-encryption\nhostname beta\nno ip icmp rate-limit unreachable")
+    vm.name = "charlie"
+    assert vm.name == "charlie"
+    with open(path) as f:
+        assert f.read() == "no service password-encryption\nhostname charlie\nno ip icmp rate-limit unreachable"
 
 
 def test_library_check(loop, vm):

tests/compute/vpcs/test_vpcs_vm.py

@@ -243,12 +243,12 @@ def test_update_startup_script(vm):
 
 
 def test_update_startup_script_h(vm):
-    content = "setname %h\n"
+    content = "set pcname %h\n"
     vm.name = "pc1"
     vm.startup_script = content
     assert os.path.exists(vm.script_file)
     with open(vm.script_file) as f:
-        assert f.read() == "setname pc1\n"
+        assert f.read() == "set pcname pc1\n"
 
 
 def test_get_startup_script(vm):
@@ -275,11 +275,18 @@ def test_change_name(vm, tmpdir):
     path = os.path.join(vm.working_dir, 'startup.vpc')
     vm.name = "world"
     with open(path, 'w+') as f:
-        f.write("name world")
+        f.write("set pcname world")
     vm.name = "hello"
     assert vm.name == "hello"
     with open(path) as f:
-        assert f.read() == "name hello"
+        assert f.read() == "set pcname hello"
+    # Support when the name is not sync with config
+    with open(path, 'w+') as f:
+        f.write("set pcname alpha")
+    vm.name = "beta"
+    assert vm.name == "beta"
+    with open(path) as f:
+        assert f.read() == "set pcname beta"
 
 
 def test_close(vm, port_manager, loop):