Skip the git state tests if a dns lookup to github.com fails

This is the quickest clever thing I could think of while running the
unit tests offline in the car during a long road trip.

tests/integration/states/git.py

@@ -3,6 +3,7 @@ Tests for the Git state
 '''
 import os
 import shutil
+import socket
 import integration
 
 
@@ -11,6 +12,18 @@ class GitTest(integration.ModuleCase, integration.SaltReturnAssertsMixIn):
     Validate the git state
     '''
 
+    def setUp(self):
+        super(GitTest, self).setUp()
+        self.__domain = 'github.com'
+        try:
+            if hasattr(socket, 'setdefaulttimeout'):
+                # 10 second dns timeout
+                socket.setdefaulttimeout(10)
+            socket.gethostbyname(self.__domain)
+        except socket.error:
+            msg = 'error resolving {0}, possible network issue?'
+            self.skipTest(msg.format(self.__domain))
+
     def test_latest(self):
         '''
         git.latest
@@ -19,7 +32,7 @@ class GitTest(integration.ModuleCase, integration.SaltReturnAssertsMixIn):
         try:
             ret = self.run_state(
                 'git.latest',
-                name='https://github.com/saltstack/salt.git',
+                name='https://{0}/saltstack/salt.git'.format(self.__domain),
                 rev='develop',
                 target=name,
                 submodules=True
@@ -57,7 +70,7 @@ class GitTest(integration.ModuleCase, integration.SaltReturnAssertsMixIn):
         try:
             ret = self.run_state(
                 'git.latest',
-                name='https://github.com/saltstack/salt.git',
+                name='https://{0}/saltstack/salt.git'.format(self.__domain),
                 rev='develop',
                 target=name,
                 submodules=True
@@ -75,7 +88,7 @@ class GitTest(integration.ModuleCase, integration.SaltReturnAssertsMixIn):
         try:
             ret = self.run_state(
                 'git.latest',
-                name='https://github.com/mozilla/zamboni.git',
+                name='https://{0}/mozilla/zamboni.git'.format(self.__domain),
                 target=name,
                 submodules=True
             )