Add hex-noslashes to Rex::Proto::Http::Client

[wvu]

msf5 exploit([redacted]) > set http::uri_encode_mode hex-
set http::uri_encode_mode hex-all        set http::uri_encode_mode hex-normal     set http::uri_encode_mode hex-noslashes  set http::uri_encode_mode hex-random
msf5 exploit([redacted]) > set http::uri_encode_mode hex-noslashes
http::uri_encode_mode => hex-noslashes
msf5 exploit([redacted]) > run

The specified value for uri_encode_mode is not one of the valid choices
[-] Exploit failed: Rex::RuntimeError The specified value for uri_encode_mode is not one of the valid choices
[*] Exploit completed, but no session was created.
msf5 exploit([redacted]) >

Fixes #3353.

[smcintyre-r7]

Yeah, I see this is a valid mode for Rex::Text.uri_encode which ultimately handles this.

I'll land this after a quick test.

[smcintyre-r7]

Release Notes

Adds hex-noslashes as a valid mode for URI encoding. This takes advantage of existing functionality and exposes it to Framework users via the datastore options within the UI.

[wvu]

Thanks!