perf: Improve ansible playbook execution (IBM#269)

Signed-off-by: Klaus Smolin <[email protected]>

ansible.cfg

@@ -6,6 +6,15 @@ roles_path=roles
 interpreter_python=auto
 host_key_checking=False
 deprecation_warnings=False
+pipelining=True
+gathering=smart
+fact_caching=jsonfile
+fact_caching_connection=/tmp
+# 1-hour timeout, adjust if needed
+fact_caching_timeout=3600
 
 [inventory]
 cache=True
+
+[ssh_connection]
+ssh_args = -o ControlMaster=auto -o ControlPersist=3600s