Replaced the expired SSL certificate and re-enabled OWS PKI test

ci/travis/linux/blacklist.txt

@@ -6,4 +6,3 @@ qgis_composerutils
 ProcessingGrass7AlgorithmsImageryTest
 ProcessingGrass7AlgorithmsRasterTest
 PyQgsDBManagerGpkg
-PyQgsAuthManagerPKIOWSTest

tests/testdata/auth_system/certs_keys/127_0_0_1_ssl_cert.pem

@@ -1,17 +1,17 @@
 -----BEGIN CERTIFICATE-----
-MIICnzCCAggCCQDJz/SWI+RkwzANBgkqhkiG9w0BAQsFADCBqDELMAkGA1UEBhMC
+MIICoTCCAgoCCQDXB1yki/vJnDANBgkqhkiG9w0BAQsFADCBqDELMAkGA1UEBhMC
 VVMxDzANBgNVBAgTBkFsYXNrYTESMBAGA1UEBxMJQW5jaG9yYWdlMRUwEwYDVQQK
 EwxRR0lTIFRlc3QgQ0ExHjAcBgNVBAsTFUNlcnRpZmljYXRlIEF1dGhvcml0eTEb
 MBkGA1UEAxMSUUdJUyBUZXN0IFJvb3QyIENBMSAwHgYJKoZIhvcNAQkBFhF0ZXN0
-Y2VydEBxZ2lzLm9yZzAeFw0xNjExMDQxMDM0NDVaFw0xNjEyMDQxMDM0NDVaMH8x
-CzAJBgNVBAYTAkNBMQ8wDQYDVQQIDAZBbGFza2ExEjAQBgNVBAcMCUFuY2hvcmFn
-ZTEVMBMGA1UECgwMUUdJUyBUZXN0IENBMRIwEAYDVQQDDAkxMjcuMC4wLjExIDAe
-BgkqhkiG9w0BCQEWEXRlc3RjZXJ0QHFnaXMub3JnMIGfMA0GCSqGSIb3DQEBAQUA
-A4GNADCBiQKBgQDPPRCUxvl0kcDr6tvpFJ8LuwCAP9p9SOC7Fx1JvQfLVv/Ded7x
-7Tn967S57AGgVyYgA09qD68UUlGLKi2fqVIO2OsBflJ9iKyOM71UlIA7mH96+ZSZ
-xYjxpHoDQ8F6856+RXHBGq8JkAxUmASCMq6a5Zcw+7C7R5/4CYHFXGFgRQIDAQAB
-MA0GCSqGSIb3DQEBCwUAA4GBAClo2Omx26R7Av9dr51I23no4Kp3CBey81pAkn5w
-jGE9nuPy+ndaSVV0+8+WMyPf7eZrkVOn41DsF1Z6eiIQsQ+2JQdOc3lIXwpJKXJJ
-0RK1ZLLaH95II3E0U6cGatDcs/jEua26T/Th6+eg5lP+mfovUBJLerYHZW0Jsfs+
-GlzG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 -----END CERTIFICATE-----