title: sparklyr change all column names spark dataframe
body: <p>I intended to change all column names. The current rename or select operation is too labouring. I dont know if anybody has a better solution. Examples as belwo:</p>
  
  <pre><code>df &lt;- data.frame(oldname1 = LETTERS, oldname2 = 1,...oldname200 = "APPLE")
  df_tbl &lt;- copy_to(sc,df,"df")
  newnamelist &lt;- paste("Name", 1:200, sep ="_")
  </code></pre>
  
  <p>How do I assign newnamelist as the new colnames? I probably cant do this:</p>
  
  <pre><code>df_new &lt;- df_tbl %&gt;% dplyr::select(Name_1 = oldname1, Name_2 = oldname2,....)
  </code></pre>