connection: Clean up usage of get_type

Move users to either get_driver or is_* functions, which are self documenting.

src/virtManager/addhardware.py

@@ -453,7 +453,7 @@ class vmmAddHardware(gobject.GObject):
             add_dev("usb", virtinst.VirtualDisk.DEVICE_DISK, "USB disk")
         if self.vm.get_hv_type().lower() == "kvm":
             add_dev("virtio", virtinst.VirtualDisk.DEVICE_DISK, "Virtio Disk")
-        if self.vm.get_connection().get_type().lower() == "xen":
+        if self.vm.get_connection().is_xen():
             add_dev("xen", virtinst.VirtualDisk.DEVICE_DISK, "Virtual disk")
 
     def populate_input_model(self, model):

src/virtManager/config.py

@@ -558,7 +558,7 @@ class vmmConfig:
                                                                       folder)
 
     def get_default_image_dir(self, connection):
-        if connection.get_type() == "Xen":
+        if connection.is_xen():
             return DEFAULT_XEN_IMAGE_DIR
 
         if (connection.is_qemu_session() or
@@ -570,7 +570,7 @@ class vmmConfig:
         return DEFAULT_VIRT_IMAGE_DIR
 
     def get_default_save_dir(self, connection):
-        if connection.get_type() == "Xen":
+        if connection.is_xen():
             return DEFAULT_XEN_SAVE_DIR
         elif os.access(DEFAULT_VIRT_SAVE_DIR, os.W_OK):
             return DEFAULT_VIRT_SAVE_DIR

src/virtManager/connection.py

@@ -141,11 +141,6 @@ class vmmConnection(gobject.GObject):
     def get_uri(self):
         return self.uri
 
-    def get_type(self):
-        if self.vmm is None:
-            return None
-        return self.vmm.getType()
-
     def get_capabilities(self):
         return virtinst.CapabilitiesParser.parse(self.vmm.getCapabilities())
 

src/virtManager/create.py

@@ -1275,10 +1275,10 @@ class vmmCreate(gobject.GObject):
     def guest_from_install_type(self):
         instmeth = self.get_config_install_page()
 
-        conntype = self.conn.get_type().lower()
-        if conntype not in ["xen", "test"]:
+        if not self.conn.is_xen() and not self.conn.is_test_conn():
             return
 
+        conntype = self.conn.get_driver()
         # FIXME: some things are dependent on domain type (vcpu max)
         if instmeth == INSTALL_PAGE_URL:
             self.change_caps(gtype = "xen", dtype = conntype)

src/virtManager/manager.py

@@ -1131,7 +1131,7 @@ class vmmManager(gobject.GObject):
         conn.pause()
 
     def _connect_error(self, conn, details):
-        if conn.get_driver() == "xen" and not conn.is_remote():
+        if conn.is_xen() and not conn.is_remote():
             self.err.show_err(_("Unable to open a connection to the Xen hypervisor/daemon.\n\n" +
                               "Verify that:\n" +
                               " - A Xen host kernel was booted\n" +