read INSTALLER_ARCHIVE variable from environment
read INSTALLER_ARCHIVE variable from environment

With that we can overwrite the default value which is not
needed in the build package for SDK case.

Change-Id: Ife33317a92149f812aafebf806743f3e322ead1d
Reviewed-by: Eike Ziller <c142da16c73a95a82d35191bcc55b22835617128@digia.com>

Distrotech/qtcreator,AltarBeastiful/qt-creator,darksylinc/qt-creator,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,maui-packages/qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,omniacreator/qtcreator,duythanhphan/qt-creator,danimo/qt-creator,darksylinc/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,malikcjm/qtcreator,kuba1/qtcreator,colede/qtcreator,amyvmiwei/qt-creator,danimo/qt-creator,colede/qtcreator,Distrotech/qtcreator,kuba1/qtcreator,darksylinc/qt-creator,colede/qtcreator,amyvmiwei/qt-creator,xianian/qt-creator,maui-packages/qt-creator,darksylinc/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,Distrotech/qtcreator,farseerri/git_code,darksylinc/qt-creator,malikcjm/qtcreator,duythanhphan/qt-creator,duythanhphan/qt-creator,kuba1/qtcreator,kuba1/qtcreator,farseerri/git_code,kuba1/qtcreator,farseerri/git_code,malikcjm/qtcreator,malikcjm/qtcreator,malikcjm/qtcreator,danimo/qt-creator,farseerri/git_code,colede/qtcreator,farseerri/git_code,darksylinc/qt-creator,farseerri/git_code,richardmg/qtcreator,maui-packages/qt-creator,farseerri/git_code,omniacreator/qtcreator,danimo/qt-creator,darksylinc/qt-creator,duythanhphan/qt-creator,Distrotech/qtcreator,duythanhphan/qt-creator,danimo/qt-creator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,darksylinc/qt-creator,omniacreator/qtcreator,AltarBeastiful/qt-creator,omniacreator/qtcreator,martyone/sailfish-qtcreator,richardmg/qtcreator,colede/qtcreator,richardmg/qtcreator,malikcjm/qtcreator,richardmg/qtcreator,Distrotech/qtcreator,richardmg/qtcreator,colede/qtcreator,maui-packages/qt-creator,richardmg/qtcreator,danimo/qt-creator,kuba1/qtcreator,xianian/qt-creator,richardmg/qtcreator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,omniacreator/qtcreator,kuba1/qtcreator,Distrotech/qtcreator,maui-packages/qt-creator,martyone/sailfish-qtcreator,Distrotech/qtcreator,kuba1/qtcreator,farseerri/git_code,maui-packages/qt-creator,xianian/qt-creator,danimo/qt-creator,martyone/sailfish-qtcreator,omniacreator/qtcreator,omniacreator/qtcreator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,xianian/qt-creator,danimo/qt-creator,duythanhphan/qt-creator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,xianian/qt-creator,AltarBeastiful/qt-creator,kuba1/qtcreator,malikcjm/qtcreator,colede/qtcreator,duythanhphan/qt-creator