In addition build bower_components.zip and fonts.zip: these are not
implicitly generated by the bazel build, so they have to be built
explicitly.
Tested:
1) Ran
rm -rf bazel-bin/polygerrit-ui/polygerrit_components.bower_components.zip && \
rm -f bazel-bin/polygerrit-ui/fonts.zip && \
bazel build polygerrit && \
$(bazel info output_base)/external/local_jdk/bin/java \
-jar bazel-bin/polygerrit.war daemon --polygerrit-dev \
-d ../gerrit_testsite --console-log --show-stack-trace
verified that test site loaded.
Change-Id: I3e220eed06bc956956095b946aafb20539ee4acd
0d4ea73587