Description of problem:

3 Data-Centers, only the last one is analysed:

# rhv-image-discrepancies 
IT IS HIGHLY RECOMMENDED YOU RUN THIS WITH RED HAT SUPPORT INVOLVED
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Using host rhevh5.rhev.gsslab.bne.redhat.com on DC 8922eadb-09a6-4a42-88ca-e6298e95b605 to run the storage check
Collecting dump from SD a22db68a-00e5-43e2-afd1-b42e5689629f...
Collecting dump from SD f50a1e6e-5b88-4d1d-ab44-0c0b2bb804f8...
Using host rhevh1.rhev.gsslab.bne.redhat.com on DC da42e5a5-f6f7-49b4-8256-2adf690ddf4c to run the storage check
Collecting dump from SD 43c67df7-2293-4756-9aa3-de09d67d7050...
Collecting dump from SD 51e44de8-2fc0-4e99-8860-6820ff023108...
Collecting dump from SD b434277c-1bc4-42db-a5b5-c8770e05a0bd...
Using host testhost01 on DC e0d7c6e5-b57d-48b8-95a8-f9ed7745da75 to run the storage check
Collecting dump from SD 83f76a58-5e6a-40de-8fb4-4f557bb80cb1...

 Checking storage domain 83f76a58-5e6a-40de-8fb4-4f557bb80cb1
	Looking for missing images...
	No missing images found
	Checking discrepancies between SD/DB attributes...
	No discrepancies found

Version-Release number of selected component (if applicable):
rhv-log-collector-analyzer-0.2.15-0.el7ev.noarch

How reproducible:
Always

Steps to Reproduce:
1. Run the run with more than 1 DC

Actual results:
Only last DC analyzed

Expected results:
All DCs analyzed

Additional info:

These loops in check_images() are not correct:

def check_dumps():
    conf = db.load_engine_credentials()
    with db.Database(conf["host"],
                     conf["port"],
                     conf["user"],
                     conf["password"],
                     conf["database"],
                     ) as d:
        result_set = d.execute(HOST_PER_DC)

        if len(result_set) == 0:
            print("No hosts in status UP found!")
            exit(1)

        storage_sds = {}
        for record in result_set:
            host = record["host_name"]
            sp_id = record["storage_pool_id"]
            print("Using host {} on DC {} to run the storage check".format(
                host, sp_id))
            sd_ids = [i["id"] for i in d.execute(SDS_PER_DC.format(storage_pool_id=sp_id))]
            storage_sds = collect_images_from_sd(host, sp_id, sd_ids)

        for sd in sd_ids:                                                 <--- sd_ids is overwritten for every iteration (per DC) of the loop above
            print("\n Checking storage domain {}".format(sd))
            db_images = [i for i in d.execute(DB_IMAGES.format(sd_id=sd))]
            report_missing_images(d, storage_sds[sd], db_images)
            report_image_discrepancies(d, storage_sds[sd], db_images)