[go-migration] [SAPMachine JRE] Configuring SAPMachine JRE in manifest.yml with different version than the default one not possible

[kiril-keranov]

When staging an app with SAPMachine JRE using a different version than the default one( currently set to 21 in go-migration branch), for example:

...
env:
    JBP_CONFIG_COMPONENTS: '{jres: ["JavaBuildpack::Jre::SapMachineJRE"]}'
    JBP_CONFIG_SAP_MACHINE_JRE: '{ jre: { version: 17.+ }}'

or

...
env:
    JBP_CONFIG_COMPONENTS: '{jres: ["JavaBuildpack::Jre::SapMachineJRE"]}'
    JBP_CONFIG_SAP_MACHINE_JRE: '{ jre: { version: 25.+ }}'

the app is still staged with the default version:

-----> Installing SAP Machine JRE
   Installing SAP Machine 21.0.9
   -----> Installing sapmachine 21.0.9
   Copy [/tmp/cache/final/dependencies/8badd5d1c0ba64505efe2df225e46a269cd1a3321d5dbb077f6453dc6d0acac6/sapmachine-jre-21.0.9_linux-x64_bin.tar.gz]

[ramonskie]

Probably related cf3e513

[kiril-keranov]

Opened this PR with a fix and added integration tests for SAP Machine cases.

[ramonskie]

fixed with c9d6006