Updated shodan_search for new API
Committing changes from r7 comments
Addressed r7 comments, fixed bug in results loop
Fix windows cmd redirection in ff payloads.
Quick fix for ssh_login_pubkey

Fixes #3772, closes #3774
Land #3775 - ssh_login_pubkey fix for the uninit prepended_creds bug

Closes #3774
Add conditions to check healthy shodan results
Land #3677 - Updated shodan_search for new API
Land #3773 - Fix windows cmd redirection in firefox payloads