Land rapid7#4794, fix some db stuff, drop 1.9 tests

Author: Tod Beardsley

.travis.yml

@@ -25,7 +25,6 @@ script:
   - git diff --exit-code && bundle exec rake $RAKE_TASKS
 sudo: false
 rvm:
-  - '1.9.3'
   - '2.1'
 
 notifications:

db/schema.rb

@@ -102,7 +102,7 @@
 
   create_table "hosts", :force => true do |t|
     t.datetime "created_at"
-    t.string   "address",                                               :null => false
+    t.string   "address",               :limit => nil,                  :null => false
     t.string   "mac"
     t.string   "comm"
     t.string   "name"
@@ -686,7 +686,7 @@
 
   create_table "wmap_requests", :force => true do |t|
     t.string   "host"
-    t.string   "address"
+    t.string   "address",    :limit => nil
     t.integer  "port"
     t.integer  "ssl"
     t.string   "meth",       :limit => 32
@@ -703,7 +703,7 @@
 
   create_table "wmap_targets", :force => true do |t|
     t.string   "host"
-    t.string   "address"
+    t.string   "address",    :limit => nil
     t.integer  "port"
     t.integer  "ssl"
     t.integer  "selected"