dependency_collector_spec: Partially fix for Linuxbrew
dependency_collector_spec: Partially fix for Linuxbrew

Some of the tests are only failing because :x11 maps to
XorgRequirement instead of X11Requirement on non-Mac.

Two of them also fail for other reasons and require
more investigation.

Signed-off-by: Bob W. Hogg <c772a964fd55352a3510e5d535dd9ccc9ac30168@linux.com>

maxim-belkin/brew,Linuxbrew/brew,Linuxbrew/brew,hanxue/linuxbrew,rwhogg/brew,Linuxbrew/brew,rwhogg/brew,maxim-belkin/brew,Linuxbrew/brew,maxim-belkin/brew,hanxue/linuxbrew,rwhogg/brew,hanxue/linuxbrew