Change solr permissions.

[grosscol]

The solr core files aren't being copied over with permissions that allow solr to access the files.

The suggest solution is to set the perms of the core's directory to:
Access: (2764/drwxrwSr--) Uid: (1001112/ solr)
Similarly for all the files copied over:
Access: (0764/-rwxrw-r--) Uid: (1001112/ solr)

Debating the merits of setting the group owner of the core directory and files to the application user. @aelkiss @malakai97 thoughts?