Fix java_home and other 6.8 bugs
Fixes:
1. BZ 1306989 - Crash seen with pki-common pkg during IPA server install
Crash in upgrade script occurs because prior to configuration,
CS.cfg has lines that are comments and that do not parse neatly
into a foo=bar pattern. Now, we will ignore comments and blank lines.
2. BZ 1290535 - Check for incompatible Java at startup
The bulk of this change. Sets the JAVA_HOME to the 1.7.0 JRE.
rather than relying on alternatives. Also includes migration script
for existing instances.
3. BZ1313207 - ca.subsystem.certreq missing from CS.cfg
certreq is not really needed right now for the upgrade scripts.
This will ignore the error if it is not present.
Please review,
Ade