[E2E Tests] Disable default HTTPS scheme when creating a new connection

[jsolovjo]

The changes introduced in hawtio/hawtio-next#930 cause E2E tests failures.

It happened due to default HTPPS scheme when a new connection is created.

The fix for E2E tests is to switch from default HTTPS to HTTP scheme when creating a new connection.

[phantomjinx]

LGTM

[github-actions]

Test Results

  4 files  ±0    4 suites  ±0   14m 24s ⏱️ +4s
 65 tests ±0   64 ✅ ±0   1 💤 ±0  0 ❌ ±0 
264 runs  ±0  254 ✅ ±0  10 💤 ±0  0 ❌ ±0 

Results for commit 85685d6. ± Comparison against base commit 758fdb9.

[hawtio-ci]

Test results

Run attempt: 1557
Detailed summary

NAME	TESTS	PASSED ✅	SKIPPED 💤	FAILED ❌	ERRORS 🚫	TIME 🕖
results-quarkus-17-firefox	66	64	2	0	0	210.889
results-quarkus-21-firefox	66	64	2	0	0	219.496
results-springboot-17-firefox	66	63	3	0	0	219.406
results-springboot-21-firefox	66	63	3	0	0	214.296