openshift.ks: Put time command on LHS of pipeline

configure_selinux_policy_on_broker, configure_selinux_policy_on_node:
When using the time command in a pipeline, use it on the left-hand side
rather than on the right-hand side so that Bash's time builtin can be
used rather than requiring the external time command provided by the
time package.

This commit fixes bug 1158821.
openshift.ks: Don't install time package

Modify install_broker_pkgs not to install the time package.

With the previous commit, the time package is no longer needed.
Merge pull request #484 from Miciah/bug-1158821-time-command-is-not-necessary-in-openshift.sh

Bug 1158821: 'time' command is not necessary in openshift.sh