Selective psexec_psh merge.
Merge remote-tracking branch 'remotes/semperv/powershell_import' into psh_merge

Conflicts:
	modules/exploits/windows/smb/psexec_psh.rb
Merge Upstream Exploit::Powershell
Update datastore changes
Merge remote-tracking branch 'origin/psh_merge' into psh_merge
Merge pull request #5 from Meatballs1/psh_merge

Looks good from here, though we may want to address the all caps opt names.