[lldb] Make TestDataFormatterObjCCF.py pass outside California

[teemperor]

Summary

This test creates its dates with NSDate dateWithNaturalLanguageString which is deprecated and uses the current time zone of the machine to
interpret the input string. This causes that the created NSDate has a different value depending on the locale of the machine
and we hardcoded the value for California's time zone (PST) but the data formatter gives out the GMT value as a string.

This just replaces the use with the timezone-independent dateWithTimeIntervalSince1970 (which we also use in the rest of the test)
to make this pass independently of the time zone of the machine running the test.

[mib]

LGTM!

lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCCF.py

def test_coreframeworks_and_run_command(self):
         self.expect(
             "thread list",
             STOPPED_DUE_TO_BREAKPOINT,
             substrs=['stopped', 'stop reason = breakpoint'])
 
         # check formatters for common Objective-C types
         expect_strings = [
             '(CFGregorianUnits) cf_greg_units = 1 years, 3 months, 5 days, 12 hours, 5 minutes 7 seconds',
-            '(CFGregorianDate) cf_greg_date = @"4/11/1985 2:0:0"',
+            '(CFGregorianDate) cf_greg_date = @"4/10/1985 18:0:0"',
             '(CFRange) cf_range = location=4 length=4',
             '(NSPoint) ns_point = (x = 4, y = 4)',
             '(NSRange) ns_range = location=4, length=4',
             '(NSRect) ns_rect = (origin = (x = 1, y = 1), size = (width = 5, height = 5))',
             '(NSRectArray) ns_rect_arr = ((x = 1, y = 1), (width = 5, height = 5)), ...',
             '(NSSize) ns_size = (width = 5, height = 7)',
             '(CGSize) cg_size = (width = 1, height = 6)',
             '(CGPoint) cg_point = (x = 2, y = 7)',

lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/main.m

NSString *hebrew = [NSString stringWithString:@"לילה טוב"];
       NSException* except1 = [[NSException alloc] initWithName:@"TheGuyWhoHasNoName~1" reason:@"Second" userInfo:nil];
       NSException* except2 = [[NSException alloc] initWithName:@"TheGuyWhoHasNoName`2" reason:@"Third" userInfo:nil];
       NSException* except3 = [[NSException alloc] initWithName:@"TheGuyWhoHasNoName/3" reason:@"Fourth" userInfo:nil];
 
       NSURL *nsurl = [[NSURL alloc] initWithString:@"http://www.foo.bar"];
       NSURL *nsurl2 = [NSURL URLWithString:@"page.html" relativeToURL:nsurl];
       NSURL *nsurl3 = [NSURL URLWithString:@"?whatever" relativeToURL:nsurl2];
     
-    NSDate *date1 = [NSDate dateWithNaturalLanguageString:@"6pm April 10, 1985"];
-    NSDate *date2 = [NSDate dateWithNaturalLanguageString:@"12am January 1, 2011"];
+    NSDate *date1 = [NSDate dateWithTimeIntervalSince1970:133890*60*60]; // 6pm April 10, 1985 GMT
+    NSDate *date2 = [NSDate dateWithTimeIntervalSince1970:14975*24*60*60]; // 12am January 1, 2011 GMT
     NSDate *date3 = [NSDate date];
     NSDate *date4 = [NSDate dateWithTimeIntervalSince1970:24*60*60];
     NSDate *date5 = [NSDate dateWithTimeIntervalSinceReferenceDate: floor([[NSDate date] timeIntervalSinceReferenceDate])];
 
     CFAbsoluteTime date1_abs = CFDateGetAbsoluteTime(date1);
     CFAbsoluteTime date2_abs = CFDateGetAbsoluteTime(date2);
     CFAbsoluteTime date3_abs = CFDateGetAbsoluteTime(date3);
     CFAbsoluteTime date4_abs = CFDateGetAbsoluteTime(date4);