rename and move coverity script wrapper

The root folder is the standard place run-* scripts so move the
script to the latter and give a proper name.

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: Iec7514573b3176af719c3e682058d134b432640b
diff --git a/script/tf-coverity/run_coverity_on_tf.py b/run-coverity.py
similarity index 100%
rename from script/tf-coverity/run_coverity_on_tf.py
rename to run-coverity.py