[pgpool-committers: 7730] pgpool: Improve sample scripts.

[Bo Peng]

Improve sample scripts.

Replcace dots or hyphens in replication slot name to underscore.

Branch
------
V4_2_STABLE

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=d4f54d8e7f1919de4ccc5dfb32481d1949c52fc0

Modified Files
--------------
src/sample/scripts/failover.sh.sample        |  5 +++--
src/sample/scripts/follow_primary.sh.sample  | 21 +++++++++++----------
src/sample/scripts/recovery_1st_stage.sample | 13 +++++++------
3 files changed, 21 insertions(+), 18 deletions(-)