Add mTLS settings to ApiClient #1519

Job	Run time
Build Reaper	5m 14s
Docker Image Tests (cassandra, docker)	36m 30s
Memory backends (binary:3.0.25, local, ccm)	15m 53s
Cassandra backend (binary:3.0.25, cassandra, ccm)	20m 21s
HTTP Management (binary:4.0.6, ccm, http-api, 1, 1)	47m 5s
Memory backends (binary:3.11.16, local, ccm)	18m 55s
Cassandra backend (binary:3.11.16, cassandra, ccm)	22m 15s
HTTP Management (binary:3.11.16, ccm, http-api, 1, 1)	47m 0s
Memory backends (binary:4.0.6, local, ccm)	19m 46s
Cassandra backend (binary:4.0.6, cassandra, ccm)	23m 59s
Each DC Availability	0s
Distributed tests	0s
Sidecar	0s
Flapping reapers	0s
Release Reaper	0s
	4h 16m 58s

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