oc_collection:exclude rts/rts-m unless defined

Signed-off-by: Kishen Maloor <kishen.maloor@intel.com>
4 jobs for master in 12 minutes and 9 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #3394
Android_build

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passed #3395
doxygen

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passed #3392
Linux_Secured_Test

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passed #3393
Linux_Unsecured_Test

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