File helper and Security helper changes suggested by SachinC

See merge request !54

modified GetAttributeBasedHashByParameters
added GetAttributeBasedHashWithRoundedModTime, TimeToMsDosTime,MsDosTimeToTime in security helper.

Added UnzipWithDefaultModifiedTime in file helper

missing imports

See merge request !53

changes in Download Helper

See merge request !52

altered modified time for the file 

GetAttributeBasedHashByParameters added

See merge request !51

GetAttributeBasedHashByParameters added to calculate hash without accessing file

Get attribute based hash

See merge request !50

GetAttributeBasedHash added

See merge request !49

GetAttributeBasedHash added

bigcache_removed

See merge request !48

bigcache_removed

file helper object

See merge request !47

(fileHelperServiceObject *FileHelperServiceObject) added for FileSearch Service

New method added to move file to another host

See merge request !46

DownloadHelper

See merge request !45

RequestTimeout added for request

Lazy writer

See merge request !43

RemoveDataFromCacheForAppend added inside lazy writer

changes inside Append function

See merge request !42

os.O_CREATE added for append function

Added query string in source path to burst cache

See merge request !41

Multiple HDD serial number

See merge request !40

DownloadHelper modifications

See merge request !39

continue added inside following condition :
--> hash == ERR_FILE_HASH
--> fileInfo.Size() < FILE_SIZE

Diskdetails helper

See merge request !38

Security Helper

See merge request !37

following condition added to avoid exception
if (length - unpadding) <0

security helper

See merge request !36

condition added to check if lenght < 0 while descrypting byte array
--sandeepss

changes in gcCacheHelper

See merge request !35