[svt] Add timestamp and thumbnail in more cases

Add timestamp, set to "valid from" which i think could been seen as publish time.
Add thumbnail in more cases, seems to was only done in the embedded data case for some reason.
Update API URL (current one redirects to it).
Switch svtplay test url to an existing video and also one with no expire date.
Also add an additional thumbnail url test regex.

youtube_dl/extractor/svt.py

@@ -9,6 +9,7 @@ from ..utils import (
     determine_ext,
     dict_get,
     int_or_none,
+    parse_iso8601,
     str_or_none,
     strip_or_none,
     try_get,
@@ -44,7 +45,8 @@ class SVTBaseIE(InfoExtractor):
                     'format_id': player_type,
                     'url': vurl,
                 })
-        if not formats and video_info.get('rights', {}).get('geoBlockedSweden'):
+        rights = video_info.get('rights', {})
+        if not formats and rights.get('geoBlockedSweden'):
             self.raise_geo_restricted(
                 'This video is only available in Sweden',
                 countries=self._GEO_COUNTRIES)
@@ -70,6 +72,8 @@ class SVTBaseIE(InfoExtractor):
         episode = video_info.get('episodeTitle')
         episode_number = int_or_none(video_info.get('episodeNumber'))
 
+        timestamp = parse_iso8601(rights.get('validFrom'))
+
         duration = int_or_none(dict_get(video_info, ('materialLength', 'contentDuration')))
         age_limit = None
         adult = dict_get(
@@ -84,6 +88,7 @@ class SVTBaseIE(InfoExtractor):
             'formats': formats,
             'subtitles': subtitles,
             'duration': duration,
+            'timestamp': timestamp,
             'age_limit': age_limit,
             'series': series,
             'season_number': season_number,
@@ -141,21 +146,26 @@ class SVTPlayIE(SVTPlayBaseIE):
                     )
                     '''
     _TESTS = [{
-        'url': 'http://www.svtplay.se/video/5996901/flygplan-till-haile-selassie/flygplan-till-haile-selassie-2',
-        'md5': '2b6704fe4a28801e1a098bbf3c5ac611',
+        'url': 'https://www.svtplay.se/video/13906852/en-liten-film-om/en-liten-film-torsk-pa-tallinn-en-liten-film-om-ensamhet',
+        'md5': '2382036fd6f8c994856c323fe51c426e',
         'info_dict': {
-            'id': '5996901',
+            'id': 'jvR32zj',
             'ext': 'mp4',
-            'title': 'Flygplan till Haile Selassie',
-            'duration': 3527,
-            'thumbnail': r're:^https?://.*[\.-]jpg$',
+            'title': 'Torsk på Tallinn - en liten film om ensamhet',
+            'timestamp': 1366063200,
+            'upload_date': '20130415',
+            'duration': 3510,
+            'thumbnail': r're:^https?://(?:.*[\.-]jpg|www.svtstatic.se/image/.*)$',
             'age_limit': 0,
             'subtitles': {
                 'sv': [{
-                    'ext': 'wsrt',
+                    'ext': 'vtt',
                 }]
             },
         },
+        'params': {
+            'format': 'bestvideo',
+        },
     }, {
         # geo restricted to Sweden
         'url': 'http://www.oppetarkiv.se/video/5219710/trollflojten',
@@ -180,7 +190,7 @@ class SVTPlayIE(SVTPlayBaseIE):
 
     def _extract_by_video_id(self, video_id, webpage=None):
         data = self._download_json(
-            'https://api.svt.se/videoplayer-api/video/%s' % video_id,
+            'https://api.svt.se/video/%s' % video_id,
             video_id, headers=self.geo_verification_headers())
         info_dict = self._extract_video(data, video_id)
         if not info_dict.get('title'):
@@ -234,8 +244,10 @@ class SVTPlayIE(SVTPlayBaseIE):
                  r'"content"\s*:\s*{.*?"id"\s*:\s*"([\da-zA-Z-]+)"'),
                 webpage, 'video id')
 
-        return self._extract_by_video_id(svt_id, webpage)
+        info_dict = self._extract_by_video_id(svt_id, webpage)
+        info_dict.update({'thumbnail': thumbnail})
 
+        return info_dict
 
 class SVTSeriesIE(SVTPlayBaseIE):
     _VALID_URL = r'https?://(?:www\.)?svtplay\.se/(?P<id>[^/?&#]+)(?:.+?\btab=(?P<season_slug>[^&#]+))?'