add BREE = 1.8 for tests/org.eclipse.jst.validation.sample/META-INF/MANIFEST.MF to maybe fix issue building w/ Tycho 1.2 in JIPP

Signed-off-by: nickboldt <nboldt@redhat.com>

tests/org.eclipse.jst.validation.sample/META-INF/MANIFEST.MF

diff --git a/tests/org.eclipse.jst.validation.sample/META-INF/MANIFEST.MF b/tests/org.eclipse.jst.validation.sample/META-INF/MANIFEST.MF
index 6ac7f4c..f68eb03 100644
--- a/tests/org.eclipse.jst.validation.sample/META-INF/MANIFEST.MF
+++ b/tests/org.eclipse.jst.validation.sample/META-INF/MANIFEST.MF
@@ -19,3 +19,4 @@
  org.eclipse.wst.common.frameworks,
  org.eclipse.core.runtime
 Bundle-ActivationPolicy: lazy
+Bundle-RequiredExecutionEnvironment: J2SE-1.8