Show tab values with WHERE clause doesn't accept double quotes

[TotallyInformation]

System info:

Raspberry Pi, Rasbian Stretch. Arm v7.

InfluxDB v1.7.1

Steps to reproduce:

Note that this bug is referenced in a closed previous issue:

#5245

1. Create database with values and tags
2. Attempt to show tag values but exclude a specific value
3. Try with the tag value wrapped in single and double quotes

Expected behavior:

Result should be the same whether using single or double quotes.

Actual behavior:

Using double quotes fails to exclude the entry.

Additional info:

pi@pi3:~ $ influx
Connected to http://localhost:8086 version 1.6.4
InfluxDB shell version: 1.7.1
Enter an InfluxQL query
> use environment_db
Using database environment_db
> SHOW TAG VALUES FROM "lights" WITH KEY = "location" WHERE location != 'NA'
name: lights
key      value
---      -----
location Front Hall
location Landing
location Living Room
location Loft Main
location Rear Hall
location Tree
> SHOW TAG VALUES FROM "lights" WITH KEY = "location" WHERE location != "NA"
name: lights
key      value
---      -----
location Front Hall
location Landing
location Living Room
location Loft Main
location NA
location Rear Hall
location Tree
>

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically closed because it has not had recent activity. Please reopen if this issue is still important to you. Thank you for your contributions.