Upgrade instructions to 4.3

Before 4.3, oxTrustConfApplication attribute under ou=oxtrust,ou=configuration,o=gluu looked like:

{
...
"scimTestMode":boolean,
"ScimProperties":{"maxCount":integer}
...
}

now it must look this way:

{
...
"ScimProperties":{
  "maxCount":integer,
  "protectionMode":string
}
...
}

protectionMode can take 3 values: OAUTH, TEST, UMA. So:

• if scimTestMode was false, protectionMode will take the value UMA; else, protectionMode will take the value TEST

• scimTestMode now disappears from oxTrustConfApplication

I already changed this template so that in a new installation, OAUTH is used as the default value for protectionMode