fixed env matrix

appveyor.yml

@@ -19,7 +19,7 @@ environment:
     PHP_SDK: c:\projects\php
     matrix:      
       - BUILD_PLATFORM: x64
-        MSSQL_SERVERNAME: (local)\SQL2012SP1
+        TEST_PHP_SQL_SERVER: (local)\SQL2012SP1
         SQL_INSTANCE: SQL2012SP1
         PHP_VC: 14
         PHP_MAJOR_VER: 7.0
@@ -29,7 +29,7 @@ environment:
         PHP_ZTS: --disable-zts
         platform: x64
       - BUILD_PLATFORM: x86
-        MSSQL_SERVERNAME: (local)\SQL2014
+        TEST_PHP_SQL_SERVER: (local)\SQL2014
         SQL_INSTANCE: SQL2014
         PHP_VC: 14
         PHP_MAJOR_VER: 7.0
@@ -38,7 +38,7 @@ environment:
         PHP_INSTALL_DIR: c:\projects\php\x86\bin        
         platform: x86
       - BUILD_PLATFORM: x64
-        MSSQL_SERVERNAME: (local)\SQL2016
+        TEST_PHP_SQL_SERVER: (local)\SQL2016
         SQL_INSTANCE: SQL2016
         PHP_VC: 14
         PHP_MAJOR_VER: 7.1
@@ -47,7 +47,7 @@ environment:
         PHP_INSTALL_DIR: c:\projects\php\x64\bin        
         platform: x64
       - BUILD_PLATFORM: x86
-        MSSQL_SERVERNAME: (local)\SQL2008R2SP2
+        TEST_PHP_SQL_SERVER: (local)\SQL2008R2SP2
         SQL_INSTANCE: SQL2008R2SP2
         PHP_VC: 14
         PHP_MAJOR_VER: 7.1
@@ -56,7 +56,6 @@ environment:
         PHP_INSTALL_DIR: c:\projects\php\x86\bin
         PHP_ZTS: --disable-zts
         platform: x86
-
     
 # PHP_MAJOR_VER is PHP major version to build (7.0, 7.1)
 # PHP_MINOR_VER is PHP point release number (or latest for latest release)