Edit Starters sometimes confused whether 'cloud-function' starter is selected

[kdvolder]

To reproduce:

• create a project with 'new spring starter' wizard
• select the starters called' Reactive Web and `Cloud Function'
• open 'Edit Starters' wizard on this project.

Notice that only 'Reactive Web' project is recognized as 'currently selected' by the wizard (this is incorrect, since Cloud Function should also be selected).

The reason for this problem is explained here:

• Edit starters sometimes not adding 'bom' as needed by new dependency #313
• https://github.com/spring-io/initializr/issues/935

[kdvolder]

The initializer folks decided not to add the metadata changes that would help us address this problem.

See: spring-io/start.spring.io#169 (comment)

Therefore it will be up to us to find some kind of workaround.

From @mbhave comments in Zoom chat from yesterday, I understand there's probably also a problem with spring session dependency in certain combinations like reddis. I will have to double-check these combinations work and/or fix them as well.

There may be others as well that we are not aware of. Perhaps it is possible for us to just run a kind of automated test of all possible pairs of co-selected dependencies to verify whether the 'reverse pom to selection' function works properly. Not sure this is practical though as there are over 6900 combinations.

The best we can probably do therefore is just fix the cases we are aware of with a simple special-case 'if' test and do this for any/all cases if and when they get reported to us.

[kdvolder]

List of problems detected by a scan of all pairs relating to cloud-function and session in combinations with all other starters:

cloud-starter-consul-config[Consul Configuration] + session[Session]: AssertionFailedError: Project creation failed
cloud-function[Cloud Function] + web[Web]: AssertionError: expected:<[web, cloud-function]> but was:<[web]>
data-redis[Redis] + session[Session]: AssertionError: expected:<[session, data-redis]> but was:<[data-redis]>
cloud-function[Cloud Function] + webflux[Reactive Web]: AssertionError: expected:<[webflux, cloud-function]> but was:<[webflux]>
cloud-starter-zookeeper-config[Zookeeper Configuration] + session[Session]: AssertionFailedError: Project creation failed
data-redis-reactive[Reactive Redis] + session[Session]: AssertionError: expected:<[data-redis-reactive, session]> but was:<[data-redis-reactive]>
jdbc[JDBC] + session[Session]: AssertionError: expected:<[session, jdbc]> but was:<[jdbc]>
data-rest-hal[Rest Repositories HAL Browser] + session[Session]: AssertionFailedError: Project creation failed

[kdvolder]

The 'Project creation failed' are expected apparantly because of bugs in the starters. I have reported these here: spring-io/start.spring.io#191