cosmetic: contrib: add 'build-' to script names

Distinguish the scripts that build binaries from the others by adding "build-"
to their names.

Change-Id: I0c3b0c06210f5cb6a936c5e90ebc9167b57eeae2
diff --git a/contrib/jenkins-osmo-bts-octphy.sh b/contrib/jenkins-build-osmo-bts-octphy.sh
similarity index 100%
rename from contrib/jenkins-osmo-bts-octphy.sh
rename to contrib/jenkins-build-osmo-bts-octphy.sh
diff --git a/contrib/jenkins-osmo-bts-sysmo.sh b/contrib/jenkins-build-osmo-bts-sysmo.sh
similarity index 100%
rename from contrib/jenkins-osmo-bts-sysmo.sh
rename to contrib/jenkins-build-osmo-bts-sysmo.sh
diff --git a/contrib/jenkins-osmo-bts-trx.sh b/contrib/jenkins-build-osmo-bts-trx.sh
similarity index 100%
rename from contrib/jenkins-osmo-bts-trx.sh
rename to contrib/jenkins-build-osmo-bts-trx.sh
diff --git a/contrib/jenkins-osmo-nitb.sh b/contrib/jenkins-build-osmo-nitb.sh
similarity index 100%
rename from contrib/jenkins-osmo-nitb.sh
rename to contrib/jenkins-build-osmo-nitb.sh