Fix InterruptedException (BackupCPS)

[matthewchivers]

Thread interrupt was being called upon database unavailability (as in galasa-dev/projectmanagement#570).

Explanation of the problem has been added in that tagged issue.

I have added a check to see if the CompletableFuture completes with an exception (this exception signals database unavailability, at least in reference to the tagged issue), and enforce a re-try if there is an exception (with a max number of retries).

The multi-catch has also been split up so that InterruptedException and ExecutionException are treated differently.

Closes galasa-dev/projectmanagement#570 when combined with a PR being raised in galasa-dev/framework that references the same issue.

Signed-off-by: Matthew Chivers matthewchivers@outlook.com

[matthewchivers]

Jenkins build failed, but should pass once PR galasa-dev-archives/framework#230 has been merged (ConfigurationPropertyStoreException needs to be added to interfaces).

[Michael-Baylis]

rejected as it is masking potential coding errors. Retries should be only for specific known errors, not everything.
Also, the retry mechanism needs to be higher up in the abstraction, so that the same retry/reconnect will work for etcd and mariadb (when we get it). Also needs to be in all methods.