Cosmetic changes to wait for node ready

[sharmay]

Add notice to show create vs join status
Remove round() from restore %age

Issue #, if available:

Description of changes:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Output in case of create_node (no delay were observed)

psql:../testing/db16-1-dsn.sql:5: NOTICE:  Checking status of pgactive.pgactive_create_group
psql:../testing/db16-1-dsn.sql:5: NOTICE:  successfully created first node pgactive.pgactive_create_group
 pgactive_wait_for_node_ready 
------------------------------
 
(1 row)

Output in case of join_node - success

psql:../testing/db16-2-dsn.sql:7: NOTICE:  Checking status of pgactive.pgactive_join_group
psql:../testing/db16-2-dsn.sql:7: NOTICE:  transferring of database 'pgadb' (1760 MB) from node pgactive1 in progress
psql:../testing/db16-2-dsn.sql:7: NOTICE:  transferring of database 'pgadb' (1760 MB) from node pgactive1 in progress
psql:../testing/db16-2-dsn.sql:7: NOTICE:  transferring of database 'pgadb' (1760 MB) from node pgactive1 in progress
psql:../testing/db16-2-dsn.sql:7: NOTICE:  transferring of database 'pgadb' (1760 MB) from node pgactive1 in progress
psql:../testing/db16-2-dsn.sql:7: NOTICE:  restoring database 'pgadb', 0% of 1760 MB complete
psql:../testing/db16-2-dsn.sql:7: NOTICE:  restoring database 'pgadb', 0% of 1760 MB complete
psql:../testing/db16-2-dsn.sql:7: NOTICE:  restoring database 'pgadb', 0% of 1760 MB complete
psql:../testing/db16-2-dsn.sql:7: NOTICE:  restoring database 'pgadb', 0% of 1760 MB complete
psql:../testing/db16-2-dsn.sql:7: NOTICE:  restoring database 'pgadb', 0% of 1760 MB complete
psql:../testing/db16-2-dsn.sql:7: NOTICE:  restoring database 'pgadb', 0% of 1760 MB complete
psql:../testing/db16-2-dsn.sql:7: NOTICE:  restoring database 'pgadb', 0% of 1760 MB complete
psql:../testing/db16-2-dsn.sql:7: NOTICE:  restoring database 'pgadb', 0% of 1760 MB complete
psql:../testing/db16-2-dsn.sql:7: NOTICE:  restoring database 'pgadb', 0% of 1760 MB complete
psql:../testing/db16-2-dsn.sql:7: NOTICE:  successfully joined the node and restored database 'pgadb' from node pgactive1
 pgactive_wait_for_node_ready 
------------------------------
 
(1 row)

Output in case of join_node - failure

NOTICE:  Checking status of pgactive.pgactive_join_group
NOTICE:  transferring of database 'pgadb' (1730 MB) from node pgactive1 in progress
<snip>
psql:../testing/db16-3-dsn.sql:6: ERROR:  could not detect a running pgactive perdb worker, current node state is i
DETAIL:  either pgactive perdb worker exited due to an error or it did not start in 300(s)
HINT:  Please check in PostgreSQL log file for more details.
CONTEXT:  PL/pgSQL function pgactive.pgactive_wait_for_node_ready(integer,integer) line 93 at RAISE

[BRupireddy2]

LGTM