vty_test_runner.py: fix indents to use spaces, fix vim comment

Most of this file uses four spaces of indenting. Replace all tabs with spaces.

Remove the erratic 'set' from the recently added vim comment at the bottom.

Change-Id: I4273b3314defb1e5b31b509c2ac7d7c6cd6834cf
diff --git a/openbsc/tests/vty_test_runner.py b/openbsc/tests/vty_test_runner.py
index 8dc4f70..a73dadd 100644
--- a/openbsc/tests/vty_test_runner.py
+++ b/openbsc/tests/vty_test_runner.py
@@ -65,38 +65,38 @@
         return (4243, "./src/osmo-bsc_mgcp/osmo-bsc_mgcp", "OpenBSC MGCP", "mgcp")
 
     def testForcePtime(self):
-	self.vty.enable()
-	res = self.vty.command("show running-config")
-	self.assert_(res.find('  rtp force-ptime 20\r') > 0)
-	self.assertEquals(res.find('  no rtp force-ptime\r'), -1)
+        self.vty.enable()
+        res = self.vty.command("show running-config")
+        self.assert_(res.find('  rtp force-ptime 20\r') > 0)
+        self.assertEquals(res.find('  no rtp force-ptime\r'), -1)
 
-	self.vty.command("configure terminal")
-	self.vty.command("mgcp")
-	self.vty.command("no rtp force-ptime")
-	res = self.vty.command("show running-config")
-	self.assertEquals(res.find('  rtp force-ptime 20\r'), -1)
-	self.assertEquals(res.find('  no rtp force-ptime\r'), -1)
+        self.vty.command("configure terminal")
+        self.vty.command("mgcp")
+        self.vty.command("no rtp force-ptime")
+        res = self.vty.command("show running-config")
+        self.assertEquals(res.find('  rtp force-ptime 20\r'), -1)
+        self.assertEquals(res.find('  no rtp force-ptime\r'), -1)
 
     def testOmitAudio(self):
         self.vty.enable()
-	res = self.vty.command("show running-config")
-	self.assert_(res.find('  sdp audio-payload send-name\r') > 0)
-	self.assertEquals(res.find('  no sdp audio-payload send-name\r'), -1)
+        res = self.vty.command("show running-config")
+        self.assert_(res.find('  sdp audio-payload send-name\r') > 0)
+        self.assertEquals(res.find('  no sdp audio-payload send-name\r'), -1)
 
-	self.vty.command("configure terminal")
-	self.vty.command("mgcp")
-	self.vty.command("no sdp audio-payload send-name")
-	res = self.vty.command("show running-config")
-	self.assertEquals(res.find('  rtp sdp audio-payload send-name\r'), -1)
-	self.assert_(res.find('  no sdp audio-payload send-name\r') > 0)
+        self.vty.command("configure terminal")
+        self.vty.command("mgcp")
+        self.vty.command("no sdp audio-payload send-name")
+        res = self.vty.command("show running-config")
+        self.assertEquals(res.find('  rtp sdp audio-payload send-name\r'), -1)
+        self.assert_(res.find('  no sdp audio-payload send-name\r') > 0)
 
         # TODO: test it for the trunk!
 
     def testBindAddr(self):
         self.vty.enable()
 
-	self.vty.command("configure terminal")
-	self.vty.command("mgcp")
+        self.vty.command("configure terminal")
+        self.vty.command("mgcp")
 
         # enable.. disable bts-bind-ip
         self.vty.command("rtp bts-bind-ip 254.253.252.250")
@@ -540,7 +540,7 @@
         res = self.vty.command("write terminal")
         self.assert_(res.find('meas-feed scenario bla') > 0)
 
-	self.vty.command("meas-feed scenario abcdefghijklmnopqrstuvwxyz01234567890")
+        self.vty.command("meas-feed scenario abcdefghijklmnopqrstuvwxyz01234567890")
         res = self.vty.command("write terminal")
         self.assertEquals(res.find('meas-feed scenario abcdefghijklmnopqrstuvwxyz01234567890'), -1)
         self.assertEquals(res.find('meas-feed scenario abcdefghijklmnopqrstuvwxyz012345'), -1)
@@ -733,7 +733,7 @@
         self.assertEquals(res.find("core-location-area-code"), -1)
         self.assertEquals(res.find("core-cell-identity"), -1)
 
-	self.vty.command("configure terminal")
+        self.vty.command("configure terminal")
         self.vty.command("msc 0")
         self.vty.command("core-location-area-code 666")
         self.vty.command("core-cell-identity 333")
@@ -1256,8 +1256,8 @@
                 continue
 
     if not conn:
-	raise Exception("VTY reports MSC is connected, but I haven't"
-			" connected yet: %r %r" % (ip, port))
+        raise Exception("VTY reports MSC is connected, but I haven't"
+                        " connected yet: %r %r" % (ip, port))
     return conn
 
 def ipa_handle_small(x, verbose = False):
@@ -1360,4 +1360,4 @@
     res = unittest.TextTestRunner(verbosity=verbose_level, stream=sys.stdout).run(suite)
     sys.exit(len(res.errors) + len(res.failures))
 
-# vim: set shiftwidth=4 expandtab nocin ai
+# vim: shiftwidth=4 expandtab nocin ai