MDL-56331 tests: increase tolerance of coordinate tests

1) It seems the maxmind database is getting relatively frequent updates
which are causing differences in exact coordinates

2) GeoIP location lookups are not an exact science, I tried to pick some
ips which I thought would remain fairly static, but these things are
just guesses.

3) Moving to 2 decimal places should give us good enough results for
this test, according to:
http://gis.stackexchange.com/questions/8650/measuring-accuracy-of-latitude-and-longitude

  "The second decimal place is worth up to 1.1 km: it can separate one
   village from the next."
  "The third decimal place is worth up to 110 m: it can identify a
   large agricultural field or institutional campus."

iplookup/tests/geoip_test.php

@@ -86,8 +86,8 @@ public function test_ipv4() {
 
         $this->assertEquals('array', gettype($result));
         $this->assertEquals('Cambridge', $result['city']);
-        $this->assertEquals(0.1249, $result['longitude'], '', 0.001);
-        $this->assertEquals(52.191000000000003, $result['latitude'], '', 0.001);
+        $this->assertEquals(0.1249, $result['longitude'], 'Coordinates are out of accepted tolerance', 0.01);
+        $this->assertEquals(52.191000000000003, $result['latitude'], 'Coordinates are out of accepted tolerance', 0.01);
         $this->assertNull($result['error']);
         $this->assertEquals('array', gettype($result['title']));
         $this->assertEquals('Cambridge', $result['title'][0]);
@@ -100,8 +100,8 @@ public function test_ipv6() {
 
         $this->assertEquals('array', gettype($result));
         $this->assertEquals('Lancaster', $result['city']);
-        $this->assertEquals(-2.79970, $result['longitude'], '', 0.001);
-        $this->assertEquals(54.04650, $result['latitude'], '', 0.001);
+        $this->assertEquals(-2.79970, $result['longitude'], 'Coordinates are out of accepted tolerance', 0.01);
+        $this->assertEquals(54.04650, $result['latitude'], 'Coordinates are out of accepted tolerance', 0.01);
         $this->assertNull($result['error']);
         $this->assertEquals('array', gettype($result['title']));
         $this->assertEquals('Lancaster', $result['title'][0]);