Land rapid7#8590, fix activerecord warning

Author: timwr

Gemfile.lock

@@ -30,7 +30,7 @@ PATH
       packetfu
       patch_finder
       pcaprub
-      pg
+      pg (= 0.20.0)
       railties
       rb-readline
       recog
@@ -233,7 +233,7 @@ GEM
       pcaprub
     patch_finder (1.0.2)
     pcaprub (0.12.4)
-    pg (0.21.0)
+    pg (0.20.0)
     pg_array_parser (0.0.9)
     postgres_ext (3.0.0)
       activerecord (>= 4.0.0)

metasploit-framework.gemspec

@@ -83,8 +83,10 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency 'packetfu'
   # For sniffer and raw socket modules
   spec.add_runtime_dependency 'pcaprub'
-  # Needed for module caching in Mdm::ModuleDetails
-  spec.add_runtime_dependency 'pg'
+  # Used by the Metasploit data model, etc.
+  # bound to 0.20 for Activerecord 4.2.8 deprecation warnings:
+  # https://github.com/ged/ruby-pg/commit/c90ac644e861857ae75638eb6954b1cb49617090
+  spec.add_runtime_dependency 'pg', '0.20.0'
   # Run initializers for metasploit-concern, metasploit-credential, metasploit_data_models Rails::Engines
   spec.add_runtime_dependency 'railties'
   # required for OS fingerprinting