Merge branch 'mh/credential-libsecret-attrs'

The way authentication related data other than passwords (e.g.
oath token and password expiration data) are stored in libsecret
keyrings has been rethought.

* mh/credential-libsecret-attrs:
  credential/libsecret: store new attributes

diff --cc t/lib-credential.sh
index 032b2d8fcc48aa2cd72c60fa05f9b1299680f92c,72f52cfedb25a7025f311c763340f14ec6697b98..15fc9a31e2cc03689e76876693e39367626784ff
--- 1/t/lib-credential.sh
--- 2/t/lib-credential.sh
+++ b/t/lib-credential.sh
@@@ -43,11 -43,9 +43,13 @@@ helper_test_clean() 
        reject $1 https example.com store-user
        reject $1 https example.com user1
        reject $1 https example.com user2
+       reject $1 https example.com user-expiry
+       reject $1 https example.com user-expiry-overwrite
        reject $1 https example.com user4
 +      reject $1 https example.com user-distinct-pass
 +      reject $1 https example.com user-overwrite
 +      reject $1 https example.com user-erase1
 +      reject $1 https example.com user-erase2
        reject $1 http path.tld user
        reject $1 https timeout.tld user
        reject $1 https sso.tld