hosts table: fix locator for host Name column

The `HostsView` Name table column XPath was missing leading '.' character,
which caused that all host rows returned had the same Name value,
equal to the first table row host Name.

airgun/views/host.py

@@ -226,7 +226,7 @@ class HostsView(BaseLoggedInView, SearchableViewMixinPF4):
         column_widgets={
             0: Checkbox(locator=".//input[@class='host_select_boxes']"),
             'Name': Text(
-                "//a[contains(@href, '/new/hosts/') and not(contains(@href, 'Insights'))]"
+                ".//a[contains(@href, '/new/hosts/') and not(contains(@href, 'Insights'))]"
             ),
             'Recommendations': Text("./a"),
             'Actions': ActionsDropdown("./div[contains(@class, 'btn-group')]"),