Use canonical name for SHA1withECDSA
Use canonical name for SHA1withECDSA

When this Signature scheme was added to Conscrypt, we went with the
Bouncycastle name of "ECDSA." However, the Standard Names documentation
that "ECDSA" should not be used due to its ambiguity.

Bug: 27753949
Change-Id: I20196550aa3cc70afaff1930d5e90e1c3a59ea82

google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt