Remove excessive strictness of OSGi dependency metadata

The OSGi dependency metadata in multiple resolver artifacts are stricter than the declared Maven dependency counterparts and should be harmonized.

For example for the maven-resolver-impl the dependencies to Guice, Eclipse Sisu and javax.inject are not marked as optional.
Furthermore the dependency to the org.slf4j.spi package has a version range of [1.7,2) which mandates a 1.x slf4j-api bundle in the runtime, while the class used from that package is also available in a 2.x version of slf4j-api.

For all other artifacts the dependency to to javax.inject should be optional as well.