fix(#709): add missing org.springframework.http OSGi import in camel-cxf-all (backport of #720 on camel-karaf-4.18.x) - #721

Backport of #720 to camel-karaf-4.18.x.

Fixes #709.

What

Adds the missing org.springframework.http* OSGi package import to the camel-cxf-all bundle.

Why

With the CXF version bundled in 4.18, org.apache.cxf.jaxrs.springmvc.SpringWebUtils references org.springframework.http.server.observation.ServerRequestObservationContext (Spring 6 / Micrometer observability). At runtime this failed with:

java.lang.NoClassDefFoundError: org/springframework/http/server/observation/ServerRequestObservationContext
    at org.apache.cxf.jaxrs.springmvc.SpringWebUtils.setHttpRequestURI(SpringWebUtils.java:51)
    ...
Caused by: java.lang.ClassNotFoundException:
    org.springframework.http.server.observation.ServerRequestObservationContext
    cannot be found by camel-cxf-all_4.18.2

camel-cxf-all enumerates specific Spring sub-packages in <camel.osgi.import> (aop, beans, context, core, util, web) but did not import org.springframework.http*. That package is a sibling of org.springframework.web, so org.springframework.web* does not cover it — the package was never wired and the class could not be found.

Note camel-cxf-spring-all is unaffected because it imports the org.springframework* wildcard.

Change

org.springframework.http*;resolution:=optional;version="${camel-osgi-spring-version}",

Marked resolution:=optional and versioned, consistent with the other optional Spring imports in this bundle (these Spring integrations are only used when Spring is on the classpath).

Scope

Karaf-specific packaging/OSGi-metadata delta only; no Camel-core change.