Feature/mcol 4882 cpimport skip rows (#3594)

* feat(cpimport): MCOL-4882 add a parameter to skip header rows

* chore(cpimport): MCOL-4882 Use boost::program_options to arguments parsing

* feat(cpimport.bin): MCOL-4882 Add missing changes

* add test

* fix clang

* add missing cmdline argument

* fix bug

* Fix double lines skipping

* Fix incorrect --silent (-N) parsing

* fix default --max-errors processing

* fix overwriting default username

* move initialization to members declaration

writeengine/bulk/we_tableinfo.h

@@ -148,8 +148,9 @@ class TableInfo : public WeUIDGID
   size_t fS3ParseLength;
   bool fNullStringMode;  // Treat "NULL" as a null value
   char fEnclosedByChar;  // Character to enclose col values
-  char fEscapeChar;      // Escape character used in conjunc-
-  //   tion with fEnclosedByChar
+  char fEscapeChar;      // Escape character used in conjunction with fEnclosedByChar
+  size_t fSkipRows;      // Header rows to skip
+  size_t fSkipRowsCur;   // Header rows left oto skip in the current file
   bool fProcessingBegun;                 // Has processing begun on this tbl
   BulkModeType fBulkMode;                // Distributed bulk mode (1,2, or 3)
   std::string fBRMRptFileName;           // Name of distributed mode rpt file
@@ -334,6 +335,10 @@ class TableInfo : public WeUIDGID
    */
   void setEscapeChar(char esChar);
 
+  /** @brief Set how many header rows should be skipped.
+   */
+  void setSkipRows(size_t skipRows);
+
   /** @brief Has processing begun for this table.
    */
   bool hasProcessingBegun();
@@ -579,6 +584,12 @@ inline void TableInfo::setEscapeChar(char esChar)
   fEscapeChar = esChar;
 }
 
+inline void TableInfo::setSkipRows(size_t skipRows)
+{
+  fSkipRows = skipRows;
+}
+
+
 inline void TableInfo::setFileBufferSize(const int fileBufSize)
 {
   fFileBufSize = fileBufSize;