Added specs to check for invalid values in msi signing_identity
Added specs to check for invalid values in msi signing_identity

intfrr/omnibus,jamesn/omnibus,intfrr/omnibus,mattray/omnibus,hugosato/omnibus,hugosato/omnibus,adamleff/omnibus,strangelittlemonkey/omnibus,rapid7/omnibus,szechyjs/omnibus,ashhher3/omnibus,strangelittlemonkey/omnibus,Altiscale/omnibus,higanworks/omnibus,ashhher3/omnibus,strangelittlemonkey/omnibus,Scalr/omnibus,Altiscale/omnibus,mattray/omnibus,rapid7/omnibus,mattray/omnibus,sh9189/omnibus,chef/omnibus,3ofcoins/chef-omnibus,pskrz/omnibus,szechyjs/omnibus,adamleff/omnibus,rhass/omnibus,higanworks/omnibus,Scalr/omnibus,rhass/omnibus,Altiscale/omnibus,DataDog/omnibus-ruby,chef/omnibus,rhass/omnibus,intfrr/omnibus,jamesn/omnibus,Scalr/omnibus,rapid7/omnibus,hugosato/omnibus,pskrz/omnibus,sh9189/omnibus,ashhher3/omnibus,higanworks/omnibus,DataDog/omnibus-ruby,pskrz/omnibus,sh9189/omnibus,DataDog/omnibus-ruby,jamesn/omnibus,3ofcoins/chef-omnibus,chef/omnibus,adamleff/omnibus,3ofcoins/chef-omnibus,szechyjs/omnibus