bootstrap-install: Added remotion of a possible previously installed agent

Signed-off-by: Erik Alexandre Pucci <eap08@c3sl.ufpr.br>
Acked-by: Klismann Smoger Mottin <ksm09@inf.ufpr.br>

bootstraps/bootstrap-install

@@ -103,9 +103,11 @@ tail -n +${BOOTSTRAP_LINES} $0 > "${SEED_MEC_HOME}/${FILE}"
 cd "${SEED_MEC_HOME}"
 verify_md5
 
-# Extract tar file and run the agent
+# Remove old agent and extract the new one
+rm -rf "${AGENT_DIR}" &> /dev/null
 tar xzf "${FILE}" &> /dev/null
 rm -rf "${FILE}" &> /dev/null
+
 if ! chown -R seed_mec:seed_mec "${SEED_MEC_HOME}"; then
     rm -rf "${SEED_MEC_HOME}" &> /dev/null
     printf "ERRO: Falha ao mudar dono dos arquivos.\n"