MP JWT 1.2 fails to load all relevant MP Config properties

[ayoho]

Describe the bug
The mpJwt-1.2 feature might fail to load MP Config properties related to MicroProfile JWT 1.2. The MP JWT feature uses an OSGi service (MpConfigProxyService) to load MP Config properties related to the feature. There are currently implementation classes for two versions of that service - 1.1 and 1.2 - that load the MP Config properties specific to each respective MP JWT release. It's possible for the 1.1 version of the service to be activated and set as the service to use in the MicroProfileJwtTAI class before the 1.2 version of the service is activated. That can cause the MP JWT feature to ignore any MP Config properties specific to MP JWT 1.2.

Example log:

[12/9/21 16:04:34:850 GMT] 00000019 id=00000000 .ws.security.mp.jwt.v11.config.impl.MpConfigProxyServiceImpl I CWWKS5775I: The MicroProfile JWT version 1.1 mpConfigProxy processed successfully.
...
[12/9/21 16:04:38:674 GMT] 00000017 id=00000000 com.ibm.ws.security.mp.jwt.config.MpConfigUtil              > <init> Entry 
                                                                                                              AtomicServiceReference[name=mpJwtExtensionService,ctx=null,ref=null,svc=null]
[12/9/21 16:04:38:674 GMT] 00000017 id=18b5bc0f com.ibm.ws.security.mp.jwt.config.MpConfigUtil              < <init> Exit 
                                                                                                              com.ibm.ws.security.mp.jwt.config.MpConfigUtil@18b5bc0f
...
[12/9/21 16:04:38:685 GMT] 00000018 id=00000000 rty.security.mp.jwt.v12.config.impl.MpConfigProxyServiceImpl I CWWKS5780I: The MicroProfile JWT version 1.2 mpConfigProxy processed successfully.
...
[12/9/21 16:04:57:387 GMT] 00000024 id=18b5bc0f com.ibm.ws.security.mp.jwt.config.MpConfigUtil               > getMpConfigMap Entry  
                                                                                                               com.ibm.ws.security.mp.jwt.v11.config.impl.MpConfigProxyServiceImpl@1993dbf5
                                                                                                               com.ibm.ws.classloading.internal.ThreadContextClassLoader@7b3a6eed
                                                                                                               {}
[12/9/21 16:04:57:387 GMT] 00000024 id=1993dbf5 .ws.security.mp.jwt.v11.config.impl.MpConfigProxyServiceImpl > getSupportedConfigPropertyNames Entry 
[12/9/21 16:04:57:387 GMT] 00000024 id=1993dbf5 .ws.security.mp.jwt.v11.config.impl.MpConfigProxyServiceImpl < getSupportedConfigPropertyNames Exit  
                                                                                                               [mp.jwt.verify.publickey, mp.jwt.verify.issuer, mp.jwt.verify.publickey.location]

Steps to Reproduce
No clear and easy steps to reproduce.

Expected behavior
The MP Config properties for the MP JWT feature version in use should be loaded correctly.

Diagnostic information:

• OpenLiberty Version: 20.0.0.10 and above
• Affected feature(s): mpJwt-1.2