Rename cgcs_overlay to mock_overlay

This helps to debrand (remove cgcs) from the tools area

Story: 2006387
Task: 36208
Change-Id: I357837a710207f8cec6409d1de99f443f8c50c84
Signed-off-by: Saul Wold <sgw@linux.intel.com>

Dockerfile

@@ -147,8 +147,8 @@ RUN useradd -s /sbin/nologin -u 9001 -g 9001 mockbuild && \
 # Inherited  tools for mock stuff
 # we at least need the mock_cache_unlock tool
 # they install into /usr/bin
-COPY toCOPY/cgcs_overlay /opt/cgcs_overlay
-RUN cd /opt/cgcs_overlay && \
+COPY toCOPY/mock_overlay /opt/mock_overlay
+RUN cd /opt/mock_overlay && \
     make && \
     make install
 

tox.ini

@@ -25,7 +25,7 @@ commands =
             -print0 | xargs -0 yamllint"
   bash -c "find {toxinidir}          \
          -not \( -type d -name .?\* -prune \) \
-         -not \( -type d -path {toxinidir}/toCOPY/cgcs_overlay -prune \) \
+         -not \( -type d -path {toxinidir}/toCOPY/mock_overlay -prune \) \
          -type f                              \
          -not -name \*~                       \
          -not -name \*.md                     \