THRIFT-3813 Appveyor builds reference an openssl version that is no longer there

Update OpenSSL binary version on Windows CI to 1.0.2i.
(Reusing a JIRA issue for 1.0.2h)
diff --git a/appveyor.yml b/appveyor.yml
index d68d3e3..cef707e 100755
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -31,7 +31,7 @@
   BOOST_LIBRARYDIR: C:\Libraries\boost_1_59_0\lib64-msvc-14.0
   # Unfurtunately, these versions need manual update because old versions are quickly deleted.
   ANT_VERSION: 1.9.7
-  OPENSSL_VERSION: 1_0_2h
+  OPENSSL_VERSION: 1_0_2i
 
 install:
 - '"C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x64'