Log Message:
mozilla-rootcerts*: update to the latest certdata.txt commit.
Let's call this 20190306, as that's the date of the commit.

Most notably, this adds support for Let's Encrypt
(ISRG Root X1).

Changes:
+# Certificate "Certigna Root CA"
+# Certificate "GTS Root R1"
+# Certificate "GTS Root R2"
+# Certificate "GTS Root R3"
+# Certificate "GTS Root R4"
+# Certificate "GlobalSign Root CA - R6"
+# Certificate "Hongkong Post Root CA 3"
+# Certificate "ISRG Root X1"
+# Certificate "OISTE WISeKey Global Root GC CA"
+# Certificate "UCA Extended Validation Root"
+# Certificate "UCA Global G2 Root"
+# Certificate "emSign ECC Root CA - C3"
+# Certificate "emSign ECC Root CA - G3"
+# Certificate "emSign Root CA - C1"
+# Certificate "emSign Root CA - G1"
-# Certificate "AC Raiz Certicamara S.A."
-# Certificate "Certplus Root CA G1"
-# Certificate "Certplus Root CA G2"
-# Certificate "ComSign CA"
-# Certificate "ISRG Root X1"
-# Certificate "OpenTrust Root CA G1"
-# Certificate "OpenTrust Root CA G2"
-# Certificate "OpenTrust Root CA G3"
-# Certificate "S-TRUST Universal Root CA"
-# Certificate "TC TrustCenter Class 3 CA II"
-# Certificate "TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H5"
-# Certificate "Visa eCommerce Root"