Bug#421622: libsasl2-modules-gssapi-mit: GSSAPI keytabs not working

[Michael Richters]

It is possible to use a separate keytab for each service with
libsasl2-modules-gssapi-mit.  One way is by setting the environment variable
KRB5_KTNAME.  For example, in order to get cyrus-imapd-2.2 to use its own
keytab, add the following line to /etc/default/cyrus-2.2:

export KRB5_KTNAME=/etc/imapd.keytab

  --Mike