Update certificates to expire in 2029

Update certificates that expire on 2021, to prolong their validity,
to make tests pass three years ahead.
diff --git a/tests/data_files/cli-rsa-sha1.crt b/tests/data_files/cli-rsa-sha1.crt
index ffbe21a..60952e6 100644
--- a/tests/data_files/cli-rsa-sha1.crt
+++ b/tests/data_files/cli-rsa-sha1.crt
@@ -1,7 +1,7 @@
 -----BEGIN CERTIFICATE-----
 MIIDPzCCAiegAwIBAgIBBDANBgkqhkiG9w0BAQUFADA7MQswCQYDVQQGEwJOTDER
 MA8GA1UECgwIUG9sYXJTU0wxGTAXBgNVBAMMEFBvbGFyU1NMIFRlc3QgQ0EwHhcN
-MTEwMjEyMTQ0NDA2WhcNMjEwMjEyMTQ0NDA2WjA8MQswCQYDVQQGEwJOTDERMA8G
+MTkwMjEwMTQ0NDA2WhcNMjkwMjEwMTQ0NDA2WjA8MQswCQYDVQQGEwJOTDERMA8G
 A1UECgwIUG9sYXJTU0wxGjAYBgNVBAMMEVBvbGFyU1NMIENsaWVudCAyMIIBIjAN
 BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyHTEzLn5tXnpRdkUYLB9u5Pyax6f
 M60Nj4o8VmXl3ETZzGaFB9X4J7BKNdBjngpuG7fa8H6r7gwQk4ZJGDTzqCrSV/Uu
@@ -11,10 +11,10 @@
 /DZrtenNLQNiTrM9AM+vdqBpVoNq0qjU51Bx5rU2BXcFbXvI5MT9TNUhXwIDAQAB
 o00wSzAJBgNVHRMEAjAAMB0GA1UdDgQWBBRxoQBzckAvVHZeM/xSj7zx3WtGITAf
 BgNVHSMEGDAWgBS0WuSls97SUva51aaVD+s+vMf9/zANBgkqhkiG9w0BAQUFAAOC
-AQEAX0vLL6qw6zYaO7a1ZXXJhWL8/vm1+yz5HrnXPX62xBD7P+cVGrOoNbD1QAj9
-otOpUsWYmHRvhotO42oqPsnoPA0JpGRR2elbTrcK9uDxg6PWwoix3uHPRuXdRIsU
-jee2TcGilXgJw1HDvJ04E5qowAtAgOcE41ZraAN43GHO2PjxcXEEoWzqSqvlUrv3
-AOaCTn9X73izMRgPbQBnJjknIzoYwWgVFaDEW/lZE0+LLa99/mxFFUBhYzAY+h/R
-rmtslJIyIzTd3sLo+XZ0hNtlBM0u1okOspSWtmoNdSiJDZMJ4LL71xuJYG46Sl/0
-1hH/1pZigeufZgYrQgqG8oHT4A==
+AQEAvhU1q5bKpkuxcYjjASRCARDUZz6X0BLr/j5S1bvdnHCzyLt30wViDNnAyO+Z
+FW5S3t+WMU80nyvZ+q+WQWx9u8yHkPx1Mkju9kxrBNiFRSKKq4U7nvB0bEp1Coij
+kaPkK6i4qpPQ4+CrPxoERIez4yqJUY5xaVMa8JIKEJPU3UX1P3AHCmIM97IbZ55m
+xqG3gus0hL6I93ou0kxMF1G5DJP4kpa/UIvXG962EXYeKfBK3MPV/yL/5tXpyjqX
+9mH7DmL3Haa2AVajx/5NGr/DKyL2aN4mG+IWO1NErUfOoR0aIDVd7q6LwD8DuKlI
+e6dcSTeYJ8CzzzPXVfwnHjDi/g==
 -----END CERTIFICATE-----