build: remove cctest extension

cctest has `so.59` extension when building node shared library in linux.
The appending is defined in node.gypi and the cctest target in node.gyp
includes node.gypi. Moving the appending from node.gypi to node target
in node.gyp fixes the issue.

Signed-off-by: Yihong Wang <[email protected]>

Author: yhwang

node.gyp

@@ -315,6 +315,11 @@
           'NODE_OPENSSL_SYSTEM_CERT_PATH="<(openssl_system_ca_path)"',
         ],
       },
+      'conditions': [
+        [ 'node_shared=="true" and node_module_version!="" and OS!="win"', {
+          'product_extension': '<(shlib_suffix)',
+        }]
+      ],
     },
     {
       'target_name': 'mkssldef',

node.gypi

@@ -11,11 +11,6 @@
       'defines': [
         'NODE_SHARED_MODE',
       ],
-      'conditions': [
-        [ 'node_module_version!="" and OS!="win"', {
-          'product_extension': '<(shlib_suffix)',
-        }]
-      ],
     }],
     [ 'node_enable_d8=="true"', {
       'dependencies': [ 'deps/v8/src/d8.gyp:d8' ],