Updating the expectation of TestUnsupportedInsertFormats test.

Previously it was expecting that inserting in any combination of text/codec where
codec!=none would fail. With the read compressed text patch, such an insert will
succeed by inserting uncompressed text, ignoring the compression type. This is a
temporary fix for this (code coverage) test to succeed, until the text writers are
in.

Change-Id: Ib34bf661ee90e3bcbb76a225df8809ae13e835fa
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/3659
Reviewed-by: Ippokratis Pandis <ipandis@cloudera.com>
Tested-by: jenkins
Skipping to run TestUnsupportedInsertFormats test for compressed test.

Realized that if we run it with text/codec it will successfully insert a record
("hi", "there") in tinytable, which is undesirable. Skipping this test for
compressed text.

Change-Id: I8076f4fcac17d7f7530ac4993b0d4b3bd89d5fa0
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/3668
Reviewed-by: Nong Li <nong@cloudera.com>
Tested-by: jenkins
Fixing a bug in test_insert that was inserting dummy records in tinytable for text/codec

Change-Id: I3e7ac5cd97de6ff4cd0eab411ac4ed4ff6c77508
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/3751
Reviewed-by: Ippokratis Pandis <ipandis@cloudera.com>
Tested-by: jenkins