Fixed Issue #15965 - Included further information for exceptions when…

[C-Bish]

… a geo-point type field is entered incorrectly

This PR fixes issues for exceptions not giving you sufficient information when you enter a geo-point type field in an incorrect format.

Changes:

• Changed the original exception message to include further information
• Added in another exception

Testing:
I tested my changes by entering in the following commands

1: Command for mapping the fields to the geo-point type
curl -XPUT 'http://localhost:9200/attraction?pretty' -H'Content-Type: application/json' -d'
{
"mappings": {
"restaurant": {
"properties": {
"location": {
"type": "geo_point"
}
}
}
}
}'

2: Command for putting incorrect geo-point (This should throw the exception error):
curl -XPUT 'http://localhost:9200/attraction/restaurant/2?pretty' -H 'Content-Type: application/json' -d '
{
"location": "127.0.0.1"
}'

Valid geo-point field is "lat, lon" or enter a geo-hash as a string.

Has been tested using the testing suite.

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