Update container resources allocation in SgInstanceProfile

[xin-hedera]

Problem

We have made SgSharedCluster changes recently to

• disable the metrics exporter container by default
• enable the postgres-util container by default

However, we should also update resources requests and / or limits for these containers in SgInstanceProfile

Solution

• Make the resources in SgInstanceProfile of the two optional containers dependent on the property enableMetricsExporter and enablePostgresUtil
• Add an appropriate cpu limits for postgres-util, 50m should suffice, note no cpu requests is needed as this is a utility container and there is no need to try to reserve CPU during initial scheduling

Alternatives

No response