Pass DATASOURCE_DBNAME from Configuration() to MongoDBConnection()

[oh2fih]

• MongoDBConnection() always uses its default (database: str = "cvedb")
  unless the setting is passed via _datasource_connection_details.
• Fix typo; connnection with three n's.
• Test database init:
  • should populate database with name from CVE-Search configuration
  • CVE-Search should be able to use it.

[oh2fih]

Database population seems to work, but there's somewhat less data, likely for reasons unrelated to this change.

As it is the cpe and cves that don't match it's likely there were some problems with the NVD API; trying to re-populate.

show dbs

admin      40.00 KiB
config    108.00 KiB
cvedb       3.48 GiB
cvedbfoo    1.95 GiB
local      80.00 KiB

db.schema.find().count()

collection	cvedb	cvedbfoo
capec	559	559	⚖️
cpe	1 211 052	817 764	⚠️
cpeother	0	0	⚖️
cves	241 201	189 192	⚠️
cwe	1 312	1 312	⚖️
info	6	6	⚖️
mgmt_blacklist	0	0	⚖️
mgmt_users	0	N/A
mgmt_whitelist	0		⚖️
schema	1	1	⚖️
via4	148 300	148 300	⚖️

db.collection.totalSize()

collection	cvedb	cvedbfoo
capec	704 512	704 512	⚖️
cpe	410 382 336	265 330 688	⚠️
cpeother	12 288	12 288	⚖️
cves	3 272 286 208	1 779 433 472	⚠️
cwe	421 888	421 888	⚖️
info	73 728	73 728	⚖️
mgmt_blacklist	12 288	12 288	⚖️
mgmt_users	61 440	N/A
mgmt_whitelist	12 288	12 288	⚖️
schema	57 344	40 960	⚠️
via4	50 552 832	50 655 232	⚖️

[oh2fih]

Database population seems to work, but there's somewhat less data, likely for reasons unrelated to this change.

As it is the cpe and cves that don't match it's likely there were some problems with the NVD API; trying to re-populate.

It seems clear this is not related to this patch at all. I just got a bunch of these:

- CveXplore.core.database_maintenance.sources_process - ERROR - Retrieval of api data resulted in an Exception: Timeout on reading data from socket...

(I still had the Squid proxy from testing cve-search/cve-search#1102 in front of the API. Looks more promising without it.)