Check that the HOME environment variable is set

A lot of things we do in the install script rely on this.

(cherry picked from commit 96406684f15feeec29a560fa84b2cfe26013803e)
add HAE repository

(cherry picked from commit ecac16a45999ffdd8a39ffddea11875c3e2abc07)
Use SLE11-HAE-SP3-Pool / SLE11-HAE-SP3-Updates for HAE

Also we do not create the repos if missing: barclamp-provisioner will be
clever enough to skip them when missing.

(cherry picked from commit 8a975358b2e743bacba304156486921647036789)
Install pacemaker barclamp in roxy

(cherry picked from commit d5a970c85c8bdbb9014114eb1b503300e16f365f)