Changed credentials validation check command
Changed credentials validation check command

Since SCVMM power operations support was implemented we are using Powershell to execute commands on the SCVMM box. The arbitrary command 'uname -a' was used to check if credentials are valid, however this command is not supported in a powershell session causing an error to be returned in the log files.
This PR updates that command to 'hostname' which is a command that can be run in Powershell

NaNi-Z/manageiq,d-m-u/manageiq,tinaafitz/manageiq,romaintb/manageiq,agrare/manageiq,pkomanek/manageiq,durandom/manageiq,matobet/manageiq,fbladilo/manageiq,jntullo/manageiq,agrare/manageiq,djberg96/manageiq,josejulio/manageiq,KevinLoiseau/manageiq,branic/manageiq,NickLaMuro/manageiq,gerikis/manageiq,juliancheal/manageiq,KevinLoiseau/manageiq,tzumainn/manageiq,agrare/manageiq,ManageIQ/manageiq,maas-ufcg/manageiq,fbladilo/manageiq,skateman/manageiq,jameswnl/manageiq,ilackarms/manageiq,durandom/manageiq,ilackarms/manageiq,chessbyte/manageiq,maas-ufcg/manageiq,jntullo/manageiq,mkanoor/manageiq,romanblanco/manageiq,maas-ufcg/manageiq,skateman/manageiq,matobet/manageiq,ManageIQ/manageiq,jvlcek/manageiq,pkomanek/manageiq,djberg96/manageiq,maas-ufcg/manageiq,romaintb/manageiq,kbrock/manageiq,romaintb/manageiq,ilackarms/manageiq,hstastna/manageiq,d-m-u/manageiq,ilackarms/manageiq,tzumainn/manageiq,josejulio/manageiq,pkomanek/manageiq,jrafanie/manageiq,chessbyte/manageiq,andyvesel/manageiq,israel-hdez/manageiq,mzazrivec/manageiq,djberg96/manageiq,NaNi-Z/manageiq,yaacov/manageiq,mfeifer/manageiq,jameswnl/manageiq,lpichler/manageiq,pkomanek/manageiq,aufi/manageiq,mfeifer/manageiq,mzazrivec/manageiq,ailisp/manageiq,syncrou/manageiq,gmcculloug/manageiq,israel-hdez/manageiq,gerikis/manageiq,ailisp/manageiq,jrafanie/manageiq,yaacov/manageiq,lpichler/manageiq,lpichler/manageiq,borod108/manageiq,jvlcek/manageiq,branic/manageiq,borod108/manageiq,durandom/manageiq,mresti/manageiq,branic/manageiq,gmcculloug/manageiq,mzazrivec/manageiq,tinaafitz/manageiq,josejulio/manageiq,NickLaMuro/manageiq,jntullo/manageiq,KevinLoiseau/manageiq,NaNi-Z/manageiq,ailisp/manageiq,NickLaMuro/manageiq,jrafanie/manageiq,juliancheal/manageiq,mresti/manageiq,tzumainn/manageiq,israel-hdez/manageiq,KevinLoiseau/manageiq,gerikis/manageiq,aufi/manageiq,maas-ufcg/manageiq,kbrock/manageiq,agrare/manageiq,aufi/manageiq,mresti/manageiq,d-m-u/manageiq,romanblanco/manageiq,tzumainn/manageiq,syncrou/manageiq,matobet/manageiq,chessbyte/manageiq,romaintb/manageiq,KevinLoiseau/manageiq,djberg96/manageiq,syncrou/manageiq,d-m-u/manageiq,skateman/manageiq,billfitzgerald0120/manageiq,ManageIQ/manageiq,gerikis/manageiq,mfeifer/manageiq,andyvesel/manageiq,jrafanie/manageiq,yaacov/manageiq,aufi/manageiq,mkanoor/manageiq,romanblanco/manageiq,jntullo/manageiq,branic/manageiq,maas-ufcg/manageiq,fbladilo/manageiq,ailisp/manageiq,KevinLoiseau/manageiq,NaNi-Z/manageiq,jvlcek/manageiq,kbrock/manageiq,ManageIQ/manageiq,borod108/manageiq,lpichler/manageiq,hstastna/manageiq,skateman/manageiq,kbrock/manageiq,syncrou/manageiq,jameswnl/manageiq,yaacov/manageiq,juliancheal/manageiq,gmcculloug/manageiq,romaintb/manageiq,mresti/manageiq,josejulio/manageiq,NickLaMuro/manageiq,matobet/manageiq,tinaafitz/manageiq,romanblanco/manageiq,billfitzgerald0120/manageiq,mzazrivec/manageiq,juliancheal/manageiq,andyvesel/manageiq,chessbyte/manageiq,mkanoor/manageiq,israel-hdez/manageiq,romaintb/manageiq,jameswnl/manageiq,billfitzgerald0120/manageiq,durandom/manageiq,andyvesel/manageiq,billfitzgerald0120/manageiq,hstastna/manageiq,fbladilo/manageiq,borod108/manageiq,mfeifer/manageiq,mkanoor/manageiq,hstastna/manageiq,gmcculloug/manageiq,tinaafitz/manageiq,jvlcek/manageiq