Working with credential store aliases should be case insensitive.

Current behavior, when aliases are converted to lowercase during add operation is not user-friendly. Subsequent operations should also support automatic conversion to lowercase.

E.g.

/subsystem=elytron/credential-store=cred-store-default/alias=UPPER:add(secret-value=password)
/subsystem=elytron/credential-store=cred-store-default/alias=UPPER:remove()

Current behavior:
First command succeeds and the second fails as the alias is changed to "upper" (in lowercase).

Expected behavior:
Both commans succeeds.

Unignore tests
When this issue is fixed, unignore (and fix if needed) related tests in testsuite/elytron/src/test/java/org/wildfly/test/integration/elytron/application/. Thanks.

git grep WFLY-8131