Remove a hardcoded package name in favor of a env variable.
Remove a hardcoded package name in favor of a env variable.

https://trello.com/c/aLn9eAj1

Related PRs:
https://github.com/ManageIQ/manageiq/pull/3676 [this branch]
https://github.com/ManageIQ/manageiq-appliance/pull/9
https://github.com/ManageIQ/manageiq-appliance-build/pull/19

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