Without --yaml, MSF_DATABASE_CONFIG or ~/.msf4/database.yml, project "database.yml" wins --execute-command

MSP-11671

Run msfconsole with `--execute-command exit` instead of running
interactly and typing `exit`.  Changes average (n=10) running time for
`/usr/bin/time rake CUCUMBER_OPTS="-r features"
FEATURE=features/msfconsole/database_yml.feature:115 cucumber:boot` from 139.76
seconds to 51.42 seconds (-63.21%).

Author: limhoff-r7

features/msfconsole/database_yml.feature

@@ -127,9 +127,7 @@ Feature: `msfconsole` `database.yml`
         database: project_metasploit_framework_test
         username: project_metasploit_framework_test
       """
-    When I run `msfconsole --environment test` interactively
-    And I wait for stdout to contain "Free Metasploit Pro trial: http://r-7.co/trymsp"
-    And I type "exit"
+    When I run `msfconsole --environment test --execute-command exit`
     Then the output should contain "project_metasploit_framework_test"