TT#5030 Provide all sync-db output also to syslog

/var/log/ngcp/ngcpcfg.log might not contain error messages from
ngcpcfg's sync-db script. This might be confusing when comparing
output from the command line with the logged actions from
ngcpcfg.log. As sync-db doesn't log all error messages to stderr
anyway and we ignore exit code of the sync-db script as well (on
purpose) let's just redirect stderr and stdout to the same file
descriptor and then provide output to the console as well as
syslog's ngcpcfg tag.

Output before this change:

| root@sp1:~# ngcpcfg commit "before"
| 2016-10-25 22:12:20: Executing sync-db:
| DBI connect('database=provisioning;host=localhost;port=3306','sipwise',...) failed: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) at /usr/share/ngcp-ngcpcfg/helper//sync-db line 70.
|                      Error: Could not connect to database 'provisioning' at 'localhost:3306' as 'sipwise': Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
| 2016-10-25 22:12:20: OK:   nothing to commit.
| 2016-10-25 22:12:20: Synchronizing MySQL grants/credentials
| Can't connect to MySQL database 'mysql': Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) at /usr/sbin/ngcp-sync-grants line 66.
| root@sp1:~# tail -f /var/log/ngcp/ngcpcfg.log
| [...]
| Oct 25 22:12:20 sp1 (notice) ngcpcfg: Executing sync-db:
| Oct 25 22:12:20 sp1 (notice) ngcpcfg: OK:   nothing to commit.
| Oct 25 22:12:20 sp1 (notice) ngcpcfg: Checking state of /etc files
| Oct 25 22:12:20 sp1 (notice) ngcpcfg: OK:   nothing to commit.
| Oct 25 22:12:20 sp1 (notice) ngcpcfg: Synchronizing MySQL grants/credentials

Output after this change gets applied:

| root@sp1:~# ngcpcfg commit "after"
| 2016-10-25 22:12:59: Executing sync-db:
|                      DBI connect('database=provisioning;host=localhost;port=3306','sipwise',...) failed: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) at /usr/share/ngcp-ngcpcfg/helper//sync-db line 70.
|                      Error: Could not connect to database 'provisioning' at 'localhost:3306' as 'sipwise': Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
| 2016-10-25 22:12:59: OK:   nothing to commit.
| 2016-10-25 22:12:59: Synchronizing MySQL grants/credentials
| Can't connect to MySQL database 'mysql': Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) at /usr/sbin/ngcp-sync-grants line 66.
| root@sp1:~# tail -f /var/log/ngcp/ngcpcfg.log
| [...]
| Oct 25 22:12:59 sp1 (notice) ngcpcfg: Executing sync-db:
| Oct 25 22:12:59 sp1 (notice) ngcpcfg:                      DBI connect('database=provisioning;host=localhost;port=3306','sipwise',...) failed: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) at /usr/share/ngcp-ngcpcfg/helper//sync-db line 70.
| Oct 25 22:12:59 sp1 (notice) ngcpcfg:                      Error: Could not connect to database 'provisioning' at 'localhost:3306' as 'sipwise': Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
| Oct 25 22:12:59 sp1 (notice) ngcpcfg: OK:   nothing to commit.
| Oct 25 22:12:59 sp1 (notice) ngcpcfg: Checking state of /etc files
| Oct 25 22:12:59 sp1 (notice) ngcpcfg: OK:   nothing to commit.
| Oct 25 22:12:59 sp1 (notice) ngcpcfg: Synchronizing MySQL grants/credentials

Change-Id: Iabb0c0ab24e212b79b0dfa85947cb274a161cc00

scripts/commit

@@ -33,10 +33,10 @@ cd "$NGCPCTL_MAIN"
 if [ -z "${NO_DB_SYNC:-}" ] ; then
   if [ -f "${RTP_INTERFACES_CONFIG}" ] ; then
     log_info "Executing sync-db: "
-    "${HELPER}/sync-db" "$NGCPCTL_CONFIG" "$CONSTANTS_CONFIG" "$RTP_INTERFACES_CONFIG" | sed "s/^/$timestamp_replacementchars/" || true
+    "${HELPER}/sync-db" "$NGCPCTL_CONFIG" "$CONSTANTS_CONFIG" "$RTP_INTERFACES_CONFIG" 2>&1 | sed "s/^/$timestamp_replacementchars/" 2>&1 | tee >(logger -t ngcpcfg) || true
   else
     log_info "Executing sync-db: "
-    "${HELPER}/sync-db" "$NGCPCTL_CONFIG" "$CONSTANTS_CONFIG" | sed "s/^/$timestamp_replacementchars/" || true
+    "${HELPER}/sync-db" "$NGCPCTL_CONFIG" "$CONSTANTS_CONFIG" 2>&1 | sed "s/^/$timestamp_replacementchars/" 2>&1 | tee >(logger -t ngcpcfg) || true
   fi
 else
     log_debug "no-db-sync: skipping 'sync-db'"