FIX - /opt/rasdaman/etc/log-client.conf should be worldwide readable

[Bang Pham Huu]

One needs to run this command normally

chmod o+r /opt/rasdaman/etc/log-client.conf

or when he logged in as another user (not rasdaman user), he will have the error:

testVM:~$ rasql -q 'select 1' --user rasadmin --passwd kxeApVopWphBpglI6reM --out string
ASSERTION FAILURE FROM EASYLOGGING++ (LINE: 341) [fileStream_.is_open()] WITH MESSAGE "Unable to open configuration file [/opt/rasdaman/etc/log-client.conf] for parsing."
terminate called after throwing an instance of 'std::out_of_range'
  what():  _Map_base::at
Aborted (core dumped)