[grilo-plugins] lastfm-cover: Use HTTPS rather than insecure HTTP

[Felipe Borges <felipeborges src gnome org>]

commit 88d674aaa46bc16ebc7d17ed13043e180a236e40
Author: Felipe Borges <felipeborges gnome org>
Date:   Tue May 2 11:28:02 2017 +0200

    lastfm-cover: Use HTTPS rather than insecure HTTP
    
    To avoid leaking (potentially uniquely identifiable) user data over
    plain text, use HTTPS whenever possible.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=766789

 src/lua-factory/sources/grl-lastfm-cover.lua |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/lua-factory/sources/grl-lastfm-cover.lua b/src/lua-factory/sources/grl-lastfm-cover.lua
index 3b4fa79..57ad848 100644
--- a/src/lua-factory/sources/grl-lastfm-cover.lua
+++ b/src/lua-factory/sources/grl-lastfm-cover.lua
@@ -36,14 +36,14 @@ source = {
     ["type"] = "audio",
     required = { "artist", "album" },
   },
-  tags = { 'music', 'net:internet', 'net:plaintext' },
+  tags = { 'music', 'net:internet' },
 }
 
 ------------------
 -- Source utils --
 ------------------
 
-LASTFM_SEARCH_ALBUM = 'http://ws.audioscrobbler.com/2.0/?method=album.getInfo&api_key=%s&artist=%s&album=%s'
+LASTFM_SEARCH_ALBUM = 'https://ws.audioscrobbler.com/2.0/?method=album.getInfo&api_key=%s&artist=%s&album=%s'
 
 ---------------------------------
 -- Handlers of Grilo functions --