avocado: Avoid incorrect cross-reference

The type `list` is mapped to our internal functions by default, although
often it should mean the builtin list type. Change the docstring to
builtin.list to avoid those warnings.
Signed-off-by: NLukáš Doktor <ldoktor@redhat.com>

avocado/core/loader.py

@@ -136,7 +136,7 @@ class TestLoaderProxy(object):
         Discover (possible) tests from test urls.
 
         :param urls: a list of tests urls; if [] use plugin defaults
-        :type urls: list
+        :type urls: builtin.list
         :param list_tests: Limit tests to be displayed (loader.ALL|DEFAULT...)
         :return: A list of test factories (tuples (TestClass, test_params))
         """

avocado/utils/gdb.py

@@ -541,7 +541,7 @@ class GDB(object):
 
         :param args: the arguments to be passed to the binary as command line
                      arguments
-        :type args: list
+        :type args: builtin.list
         :returns: a :class:`CommandResult` instance
         :rtype: :class:`CommandResult`
         """

avocado/utils/genio.py

@@ -141,7 +141,7 @@ def read_all_lines(filename):
     :type filename: str
 
     :return: all lines of the file as list
-    :rtype: list
+    :rtype: builtin.list
     """
     contents = []
     try:

avocado/utils/linux_modules.py

@@ -92,7 +92,7 @@ def get_submodules(module_name):
     :param module_name: Name of module to search for
     :type module_name: str
     :return: List of the submodules
-    :rtype: list
+    :rtype: builtin.list
     """
     module_info = loaded_module_info(module_name)
     module_list = []

avocado/utils/service.py

@@ -255,7 +255,7 @@ def sys_v_init_command_generator(command):
     :param command: start,stop,restart, etc.
     :type command: str
     :return: list of commands to pass to process.run or similar function
-    :rtype: list
+    :rtype: builtin.list
     """
     command_name = "service"
     if command == "is_enabled":
@@ -299,7 +299,7 @@ def systemd_command_generator(command):
     :type command: str
     :return: List of command and arguments to pass to process.run or similar
             functions
-    :rtype: list
+    :rtype: builtin.list
     """
     command_name = "systemctl"
     if command == "is_enabled":