test: give tests unique names
Fixes errors that look like
```
Error: Duplicate test name(s) in file "/Users/runner/work/sdk/sdk/e2e/tests-dfx/call.bash": test_call_random_value
```
@@ -24,7 +24,7 @@ teardown() {
assert_match '("Hello, Names are difficult!")'
}
-@test "call random value" {
+@test "call random value (pattern)" {
install_asset greet
dfx_start
dfx canister create --all
@@ -41,7 +41,7 @@ teardown() {
assert_command_fail dfx canister call hello greet
}
-@test "call random value" {
+@test "call random value (empty)" {
install_asset greet
dfx_start
dfx canister create --all
