"Starting msfconsole with a valid database.yml" --defer-module-loads

MSP-11671

Run `msfconsole` with `--defer-module-loads` to change average (n=10)
runtime of `/usr/bin/time rake CUCUMBER_OPTS="-r features"
FEATURE=features/msfconsole/database_yml.feature:150 cucumber:boot` from 57.02
seconds to 38.76 seconds (-32.03%).  (-80.26% change from
288d77f.) Raw data:
https://docs.google.com/spreadsheets/d/1vCRi_38Go3Wfq670eDCXMTSSXL1blSbk6NQsgpOqfYw/edit?usp=sharing.

Author: limhoff-r7

features/msfconsole/database_yml.feature

@@ -148,6 +148,6 @@ Feature: `msfconsole` `database.yml`
     And the output should contain "[*] postgresql selected, no connection"
 
   Scenario: Starting `msfconsole` with a valid database.yml
-    When I run `msfconsole --execute-command db_status --execute-command exit`
+    When I run `msfconsole --defer-module-loads --execute-command db_status --execute-command exit`
     Then the output should contain "[*] postgresql connected to metasploit_framework_test"