Add new DigiCert roots.
Friendly Name: "DigiCert Assured ID Root G2"
Signature Algorithm: SHA-256 with RSA
Key Size: 2048-bit RSA
Valid From: August 1, 2013
Valid to: January 15, 2038
SHA1 fingerprint: A1 4B 48 D9 43 EE 0A 0E 40 90 4F 3C E0 A4 C0 91 93 51 5D 3F

Friendly Name: "DigiCert Assured ID Root G3"
Signature Algorithm: ECDSA Signature with SHA-384
Key Size: 384-bit ECC
Valid From: August 1, 2013
Valid to: January 15, 2038
SHA1 fingerprint: F5 17 A2 4F 9A 48 C6 C9 F8 A2 00 26 9F DC 0F 48 2C AB 30 89

Friendly Name: "DigiCert Global Root G2"
Signature Algorithm: SHA-256 with RSA
Key Size: 2048-bit RSA
Valid From: August 1, 2013
Valid to: January 15, 2038
SHA1 Fingerprint: DF 3C 24 F9 BF D6 66 76 1B 26 80 73 FE 06 D1 CC 8D 4F 82 A4

Friendly Name: "DigiCert Global Root G3"
Signature Algorithm: ECDSA Signature with SHA-384
Key Size: 384-bit ECC
Valid From: August 1, 2013
Valid to: January 15, 2038
SHA1 Fingerprint: 7E 04 DE 89 6A 3E 66 6D 00 E6 87 D3 3F FA D9 3B E8 3D 34 9E

Friendly Name: "DigiCert Trusted Root G4"
Signature Algorithm: SHA-384 with RSA
Key Size: 4096-bit RSA
Valid From: August 1, 2013
Valid to: January 15, 2038
SHA1 Fingerprint: DD FB 16 CD 49 31 C9 73 A2 03 7D 3F C8 3A 4D 7D 77 5D 05 E4