Remote Runner: assume dependencies are fulfilled

This is a prep work for making the Remote Runner an optional plugin.

By installing the Remote Runner through the usual ways (setup.py) the
dependencies will always be fullfilled, so this manual check is not
needed or desirable.

If users still want to check for the presence of this feature, they
should use standard Python pkg_resources for that.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

avocado/core/remoter.py

@@ -20,22 +20,15 @@ import getpass
 import os
 import time
 
+import fabric.api
+import fabric.network
+import fabric.operations
+import fabric.tasks
+from fabric.context_managers import shell_env
+
 from .settings import settings
 from ..utils import process
 
-try:
-    import fabric.api
-    import fabric.network
-    import fabric.operations
-    import fabric.tasks
-    from fabric.context_managers import shell_env
-except ImportError:
-    REMOTE_CAPABLE = False
-    LOG.info('Remote module is disabled: could not import fabric')
-    fabric = None
-else:
-    REMOTE_CAPABLE = True
-
 
 class RemoterError(Exception):
     pass

avocado/core/virt.py

@@ -33,11 +33,6 @@ else:
     VIRT_CAPABLE = True
 
 
-if remoter.REMOTE_CAPABLE is False:
-    VIRT_CAPABLE = False
-    LOG.info('Virt module is disabled: remote module is disabled')
-
-
 class VirtError(Exception):
 
     """

avocado/plugins/remote.py

@@ -20,7 +20,6 @@ import sys
 
 from avocado.core import exit_codes
 from avocado.core import loader
-from avocado.core import remoter
 from avocado.core.plugin_interfaces import CLI
 from avocado.core.remote import RemoteTestRunner
 
@@ -35,9 +34,6 @@ class Remote(CLI):
     description = "Remote machine options for 'run' subcommand"
 
     def configure(self, parser):
-        if remoter.REMOTE_CAPABLE is False:
-            return
-
         run_subcommand_parser = parser.subcommands.choices.get('run', None)
         if run_subcommand_parser is None:
             return