Fix for bugs 3148479, 3140473: COPY FROM CVS HEADER, COPY TO WITH CSV QUOTE
Fix for bugs 3148479, 3140473: COPY FROM CVS HEADER, COPY TO WITH CSV QUOTE

When using a CVS HEADER for COPY FROM, only data rows should be sent to Datanodes.
QUOTE problem was resulting in a incorrect output for data rows using quotes.

Patches written by Benny Wang

oberstet/postgres-xl,snaga/postgres-xl,techdragon/Postgres-XL,ovr/postgres-xl,yazun/postgres-xl,snaga/postgres-xl,kmjungersen/PostgresXL,pavanvd/postgres-xl,Postgres-XL/Postgres-XL,Postgres-XL/Postgres-XL,yazun/postgres-xl,ovr/postgres-xl,oberstet/postgres-xl,zeroae/postgres-xl,arcivanov/postgres-xl,Postgres-XL/Postgres-XL,kmjungersen/PostgresXL,arcivanov/postgres-xl,pavanvd/postgres-xl,oberstet/postgres-xl,postmind-net/postgres-xl,postmind-net/postgres-xl,oberstet/postgres-xl,postmind-net/postgres-xl,ovr/postgres-xl,arcivanov/postgres-xl,yazun/postgres-xl,arcivanov/postgres-xl,kmjungersen/PostgresXL,zeroae/postgres-xl,kmjungersen/PostgresXL,techdragon/Postgres-XL,arcivanov/postgres-xl,Postgres-XL/Postgres-XL,snaga/postgres-xl,yazun/postgres-xl,snaga/postgres-xl,techdragon/Postgres-XL,snaga/postgres-xl,arcivanov/postgres-xl,oberstet/postgres-xl,pavanvd/postgres-xl,ovr/postgres-xl,zeroae/postgres-xl,zeroae/postgres-xl,pavanvd/postgres-xl,pavanvd/postgres-xl,ovr/postgres-xl,zeroae/postgres-xl,techdragon/Postgres-XL,kmjungersen/PostgresXL,postmind-net/postgres-xl,yazun/postgres-xl,techdragon/Postgres-XL,postmind-net/postgres-xl,Postgres-XL/Postgres-XL