rt build can't access build product of std build

[Michel Thebeau [WIND]]

Title
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rt build can't access build product of std build

Brief Description
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An RT package wants to access a devel package produced by the STD build. This is currently prohibited. Initially this prevented RT kernel modules from building against the STD kernel-devel package.

And example is rdma-core package presented in both rt and std builds. cgcs-dpdk uses a header file (ibverbs.h) which is provided by rdma-core-devel

Severity
--------
Minor

Steps to Reproduce
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Inspect build output:
ls {rt,std}/rpmbuild/RPMS/rdma-core*

Expected Behavior
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A package for rt build can access std build developement packages, while rt builds that must refer to rt specific packages will do so correctly

Actual Behavior
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A package is built for rt that is not required specifically for rt

Reproducibility
---------------
Reproducible

System Configuration
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Build

Branch/Pull Time/Commit
-----------------------
2019-01-16_20-18-01
starlingx/master

Timestamp/Logs
--------------

N/A

[Ghada Khalil (gkhalil)]

As discussed with Ken, this is a minor build issue and does not gate any release