feat: Add TLS support

[jriouovh]

Hello folks,

When TLS is enabled, the clickhouse-client must use the --secure option to connect. This commit adds a new argument -t 0|1, because -s was already used to define the host, to disable or enable the secure more. Only the -t 1 will enable the mode. Other options are ignored.

Example without the secure mode (default):

# ./check_clickhouse -m replication_active_replicas
REPLICATION_ACTIVE_REPLICAS CRITICAL: Unable to reach clickhouse

With the secure mode:

# ./check_clickhouse -m replication_active_replicas -t 1
REPLICATION_ACTIVE_REPLICAS OK: All tables have active_replicas=2

Without the secure mode but the argument provided:

# ./check_clickhouse -m replication_active_replicas -t 0
REPLICATION_ACTIVE_REPLICAS CRITICAL: Unable to reach clickhouse

With invalid arguments:

# ./check_clickhouse -m replication_active_replicas -t
Option '-t' requires an argument.
# ./check_clickhouse -m replication_active_replicas -t x
Option secure (-t) can only be 0 or 1

I wish you to have a nice day,
Julien