Med: oracledb.sh: Fix process name grep in exit_idle

Fix a bug that can cause the script to pause for 90 seconds
in the event there are multiple Oracle instances running
and the exit_idle function is called.

Resovles: rhbz#853220

Signed-off-by: Ryan McCabe <rmccabe@redhat.com>
Med: rgmanager oracle agents

Add support for setting the TNS_ADMIN shell variable to oracledb.sh,
orainstance.sh, and oralistener.sh

Resolves: rhbz#917807

Signed-off-by: Ryan McCabe <rmccabe@redhat.com>
Merge pull request #296 from ryan-mccabe/master

rgmanager Oracle agent fixes