base.install: Fix major version test
base.install: Fix major version test

Due to the lack of space after '6' in the test, the latter always
returned false, provoking edeploy to try to install grub2 on EL6.5

redhat-cip/edeploy,redhat-cip/edeploy,enovance/edeploy,lebauce/edeploy,enovance/edeploy,enovance/edeploy,redhat-cip/edeploy,enovance/edeploy,lebauce/edeploy,lebauce/edeploy,lebauce/edeploy,redhat-cip/edeploy