build: Add 'Release' builds to .appveyor.yml
build: Add 'Release' builds to .appveyor.yml

Dan fixed the release builds a while back but the AppVeyor yml file was
never updated to get these on the build matrix.

Signed-off-by: Philip Tricca <fd418754d31777cf39b16b99b0350486ab840079@intel.com>

01org/tpm2-tss,tpm2-software/tpm2-tss,01org/tpm2-tss,01org/TPM2.0-TSS,01org/TPM2.0-TSS,tpm2-software/tpm2-tss,01org/TPM2.0-TSS,tpm2-software/tpm2-tss,01org/tpm2-tss,01org/TPM2.0-TSS