support Google ACME server

see: https://github.com/acmesh-official/acme.sh/wiki/Server

acme.sh

@@ -34,6 +34,9 @@ _ZERO_EAB_ENDPOINT="https://api.zerossl.com/acme/eab-credentials-email"
 CA_SSLCOM_RSA="https://acme.ssl.com/sslcom-dv-rsa"
 CA_SSLCOM_ECC="https://acme.ssl.com/sslcom-dv-ecc"
 
+CA_GOOGLE="https://dv.acme-v02.api.pki.goog/directory"
+CA_GOOGLE_TEST="https://dv.acme-v02.test-api.pki.goog/directory"
+
 DEFAULT_CA=$CA_ZEROSSL
 DEFAULT_STAGING_CA=$CA_LETSENCRYPT_V2_TEST
 
@@ -44,9 +47,11 @@ LetsEncrypt.org_test,letsencrypt_test,letsencrypttest
 BuyPass.com,buypass
 BuyPass.com_test,buypass_test,buypasstest
 SSL.com,sslcom
+Google.com,google
+Google.com_test,googletest,google_test
 "
 
-CA_SERVERS="$CA_ZEROSSL,$CA_LETSENCRYPT_V2,$CA_LETSENCRYPT_V2_TEST,$CA_BUYPASS,$CA_BUYPASS_TEST,$CA_SSLCOM_RSA"
+CA_SERVERS="$CA_ZEROSSL,$CA_LETSENCRYPT_V2,$CA_LETSENCRYPT_V2_TEST,$CA_BUYPASS,$CA_BUYPASS_TEST,$CA_SSLCOM_RSA,$CA_GOOGLE,$CA_GOOGLE_TEST"
 
 DEFAULT_USER_AGENT="$PROJECT_NAME/$VER ($PROJECT)"