OPSEXP-566 make alfresco realm admin password configurable

[mteodori]

• allow specifying adminPassword as an helm value
• replace encrypted password import with actual value as it's encrypted at rest once imported (tested that test_user password IS actually password)

Ref. OPSEXP-566

[mteodori]

If I understood correctly the approach that we should take, we should not provide a default password but instead either generate a random one on deployment or require it as an input from user. Generally speaking I think we need a consolidated approach for password management that 's safe and reusable accross charts. One approach could be to have a root secret which contains credentials for different services and use an helm lookup() to query the credentials from children charts...? (to be tested)

yep using something like the helper library from bitnami https://github.com/bitnami/charts/tree/master/bitnami/common as used in their PostgreSQL chart