"Starting msfconsole with a valid database.yml" --execute-command

MSP-11671

Run `msfconsole` with `--execute-command db_status --execute-command
exit` instead of running interactively and typing `db_status` and `exit`
to change the average (n=10) running time of `/usr/bin/time rake
CUCUMBER_OPTS="-r features"
FEATURE=features/msfconsole/database_yml.feature:150 cucumber:boot` from
196.30 seconds to 57.02 seconds (-70.95%).  Raw data:
https://docs.google.com/spreadsheets/d/1vCRi_38Go3Wfq670eDCXMTSSXL1blSbk6NQsgpOqfYw/edit?usp=sharing.

Author: limhoff-r7

features/msfconsole/database_yml.feature

@@ -148,9 +148,6 @@ Feature: `msfconsole` `database.yml`
     And the output should contain "[*] postgresql selected, no connection"
 
   Scenario: Starting `msfconsole` with a valid database.yml
-    Given I run `msfconsole` interactively
-    And I wait for stdout to contain "Free Metasploit Pro trial: http://r-7.co/trymsp"
-    When I type "db_status"
-    And I type "exit"
+    When I run `msfconsole --execute-command db_status --execute-command exit`
     Then the output should contain "[*] postgresql connected to metasploit_framework_test"